In the table below, the average number of Sunny Days for a city in Hawaii is the total days in a year when the sky is mostly clear. Overall, we try and go with the flow so we simply adjust our plans accordingly. The windiest month (with the highest average wind speed) is July (12.3mph). The coldest month (with the lowest average low temperature) is February (68.5F). In Kauai you will find more variation in temperature with location, rather than with seasons. google_ad_height = 60; the weather in Kauai (Garden Isle) in april is wet (with 3.3in of rainfall over 5 days). The wettest month in Poipu is February where a typical day has a 11% chance of precipitation and gets 0.07 inches (1.8 mm) of precipitation, while the dryest month in Poipu is June where a typical day has a 4% chance of precipitation and gets 0.05 inches (1.3 mm) of precipitation. At the end of your vacation, please let us know what sort of weather you encountered. South Maui is driest in Kihei and Wailea, and as you move towards Makena, you tend to see more rain. The rainfall here is around 797 mm | 31.4 inch per year. How concerned should we be about being uncomfortable if we are staying in places without Air Conditioning? The temperature in September averages 25.4 C | 77.7 F. I am planning vacations in Kauai from 10th December to 18th December. In more common terms of how much that is, some would describe it as heavy rain. In fact, we tend to go to Hawaii quite often in the winter because we love the humpback whale season in Hawaii. more rain falls overnight than during daytime hours, fun rainy day activities to enjoy on Kauai, two different vacation experiences on the same Hawaiian Island, https://www.govisithawaii.com/2017/06/14/one-week-vacation-itinerary-travel-planner-for-the-big-island-of-hawaii/, https://www.govisithawaii.com/2017/06/01/one-week-kauai-vacation-itinerary-travel-planner/, https://www.govisithawaii.com/kauai-where-to-stay/, https://www.govisithawaii.com/2018/06/12/tips-choosing-hawaii-vacation-condo-villa/, Review: Kauais St. Regis Princeville Resort, July 4th Fireworks and Celebrations in Hawaii, Romantic Sunset Dining The Beach House Restaurant Kauai, Hawaii, Hawaii Vacation News Roundup for July 5th, How much for a trip to Hawaii in 2023? Poipu is your best bet to try to minimize rain. /* ID-we-bot */ Throughout the year, in Poipu, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated. Humidity in Poipu Beach in January The maximum dew point (an indicator of humidity) in Poipu Beach in January is 19 which is somewhat uncomfortable for most people in cities but fine on a . Throughout July, 1.77" (45mm) of precipitation is accumulated. The month with the highest number of rainy days is July (19.87 days). Per the data on this page, the average humidity is in the low to mid 70%. See more advice on where to stay on Kauai: https://www.govisithawaii.com/kauai-where-to-stay/. To keep more comfortable in humid weather, we recommend that you stay in a place that has ample air conditioning. //-->. google_ad_height = 280; Average nightime low temperatures are usually 10-15 degrees below the high. The rainiest month is December at 5.2 inches of rain. And on the average day it rains or snows, we get 0.84 in ( 21.4 mm) of precipitation. Can we expect more sunny days than what it is showing? For comparison, the hottest month in Poipu, September, has days with highs of 81F (27C) and lows of 78F (26C). The following graph shows the average monthly high and low temperatures based on weather data collected at the Kauai airport in Lihue. /* WE-top 468x60 */ Weve been catching some of the recent Kauai weather news with this unusual wet spell and hoping for clearing skies for all. Showers during the day pass quickly usually. Well text you a link to download the app. Poipu Beach Park: Busy but beautiful - See 4,896 traveler reviews, 1,995 candid photos, and great deals for Poipu, HI, at Tripadvisor. Live Trading Lab; Financial Literacy Thats generally the case in Hawaii. In a typical year, Poipu, Hawaii temperatures fall below 50F for 0 days per year. The driest month in Poipu Beach is June with 4.2cm of rain and May has the fewest days of rain with 18.1 days with some rain, The month with the least rain in Kailua-Kona is June, with an average rainfall of 1.1 inches. The least windy month in Poipu Beach is May when the average maximum windspeed is 30kmh and the average wind speed is 19kmh. The most windy month in Poipu Beach is March when the average maximum windspeed is 34kmh and the average wind speed is 22kmh. Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. Grand Hyatt Kauai Resort & Spa: Prioritizes profit over the safety of its guests - See 9,672 traveller reviews, 5,668 candid photos, and great deals for Grand Hyatt Kauai Resort & Spa at Tripadvisor. The hottest month in Poipu Beach is September when the average maximum temperature is 29, average temperature is 27 and average minimum temperature is 23. What is the climate like in Koloa-Poipu, Hawaii? It may be helpful to understand the yearly precipitation by imagining 5 straight days of moderate rain per year. in 2010, 2011, etc.) When is the sunrise / sunset in August in Poipu? The calmest month (with the lowest average wind speed) is January (10mph). (Be sure and watch their video.) It may be helpful to understand the yearly precipitation by imagining 8 straight days of moderate rain per year. From these two maps, take notice that the popular resort area of Poipu is the driest region, followed by the east side towns of Kapaa and Lihue where many hotels and vacation rentals are. Annual precipitation in Koloa-Poipu is typically 40.6 inches per year (moderateAnalytics team at Dwellics grouped locations into 5 ranges for each metric: Lowest, Low, Moderate, High, Highest in the US) and snow covers the ground 0 days per year or 0.0% of the year (the lowestAnalytics team at Dwellics grouped locations into 5 ranges for each metric: Lowest, Low, Moderate, High, Highest in the US). Check them out here: Build, organize, and map your itinerary to. google_ad_client = "pub-0361038878511174"; Nearby Similar Homes. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. You cant make a bad choice. There are many important factors that may affect your personal climate preferences including average temperature and humidity, annual rainfall and snow, number of cloudy days, wind speeds, and more. In Poipu, Hawaii, the shortest day starts at 7:19am and ends at 5:53pm and lasts for 10 hours 47 minutes. Some areas are drier than others. We dont have an app, but the entire site is mobile friendly. If Kauai, do you recommend staying in two different locations and is that even possible if we want to rent something with a kitchen? I love Hawaii. The average temperatures vary during the year by 3.6 C | 6.4 F. Rain makes the pretty waterfalls flow. For all data based on historical data, we've averaged the data from the past 11 years (2010-2020). - See 4,895 traveler reviews, 1,995 candid photos, and great deals for Poipu, HI, at Tripadvisor. And on the average day it rains or snows, we get 0.84 in (21.4 mm) of precipitation. In Koloa-Poipu, Hawaii, the shortest day starts at 7:19am and ends at 5:53pm and lasts for 10 hours 47 minutes. Ps. We are planning a trip to Hawaii mid-late November. Normal Climate Normal Temperatures (LIHUE AP 1020.1 Weather station, 9.99 miles from Poipu) Normal Precipitation [2347904]. Weather patterns can be an important part of deciding when to plan your Kauai vacation. The warmest sea water temperatures in Poipu Beach are found in October when they peak at 28 and lowest in March when they dip to 24. First published on Thu 7 Apr 2022 22.25 EDT. In a typical year, Koloa-Poipu, Hawaii temperatures fall below 50F for 0 days per year. The average temperature in Poipu in June for a typical day ranges from a high of 79F (26C) to a low of 76F (25C). However, it has been unusually rainy this year with flash flooding. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. The month with the highest UV index is September (UV index 7). Based on our preferred activities, would you recommend Kauai or the Big Island? Atlanta (ATL), Washington (IAD), Newark (EWR), Manila (MNL), Papeete (Tahiti) (PPT), Tokyo (NRT), Chitose (CTS), Tokoname (NGO), Shanghai (PVG), Taipei City (TPE), Brisbane (BNE), Portland (PDX), San Jos (SJC), Bellingham (BLI), Los Angeles (LAX), Nadi (NAN), San Diego (SAN), Seoul (ICN), Melbourne (MEL), Lihue (LIH), Fukuoka (FUK), Pago Pago (PPG), Kaunakakai (MKK), Kahului (OGG), Kahe Koloa Landing Resort at Poipu, Autograph Collection: Wonderful Family Resort - See 3,118 traveller reviews, 2,018 candid photos, and great deals for Koloa Landing Resort at Poipu, Autograph Collection at Tripadvisor. The month with the shortest days is December (Average daylight: 10h and 49min). Ironically, that rainy day was in one of the driest months May. September is the warmest month of the year. This varies depending on what time of year you visit Poipu. The area around Poipu has a dry tropical climate. Wainiha The annual average precipitation at Poipu is 9.99 Inches. The months with the least cloud cover are January and September (Cloud cover 38). very humid and quite uncomfortable for most unless you are on a beach. Aloha! Would you agree? Get inspired for your trip to Poipu with our curated itineraries that are jam-packed with popular attractions everyday! Scan the QR code or enter your mobile number. Highs and lows in Poipu in Jan How much does it rain in January In Poipuin January, there's a9% chance ofrainon an average day. So, keep that in mind as you are considering this data. The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi). On the first day of the month, sunrise is at 7:16 am and sunset at 6:06 pm. Poipu, HI climate is warm during summer when temperatures tend to be in the 70's and warm during winter when temperatures tend to be in the 70's. We did not smooth the data, so for example, our daily temperature line will have some randomness due to the fact that weather is random in the first place. We were told the North shore water is calmer in summer and Poipu area is calmer in winter. I am still deciding which is the best time to go. An example of data being processed may be a unique identifier stored in a cookie. Kekaha I was wondering if there is an iPhone app for govisithawaii.com? Summer starts here at the end of June and ends in September. You can swim year round in Hawaii. Weather.com brings you the most accurate monthly weather forecast for Lawai, HI with average/record and high/low temperatures, precipitation and more. For example, for the hourly temperature at 10am, we've looked at the temperature at 10am on every day in March (e.g., March 1, March 2, etc. The most humid month in Poipu Beach is August with a dew point (an indicator of humidity) of 22 which is The skies are usually overcast and a little rain falls most days but is short lived. Ft. 1696 Pee Rd, Koloa, HI 96756. I am planning our honeymoon in late oct/early November. The average temperature in Poipu in December for a typical day ranges from a high of 77F (25C) to a low of 74F (23C). The average water temperature in Poipu in winter reaches 76.5F, in spring 76.5F, in summer the average temperature rises to 79.5F, and in autumn it is 80.1F. Which is the Best Hawaiian Island to Visit for Your Vacation? There are 114.4 rainy days annually in Poipu, which is less rainy than most places in Hawaii. Rainfall in is fairly evenly distributed throughout the year. Annual precipitation in Koloa-Poipu is typically 40.6 inches per year ( moderate in the US) and snow covers the ground 0 days per year or 0.0% of the year ( the lowest in the US). in 2010, 2011, etc.) Hi Bruce and thanks for your question. We stay in Kapaa area for its central location and low key vibe. We typically travel here late Oct/early Nov to avoid the crowds. The lush landscape of the north shore is attributed to the rainfall it receives. And it nudges up to the Napali coast, so great views of that too. For more details, see our Hawaii ocean temperatures article. Chance of rainfall chart with likely precipitation and statistics in live rain gauge WillyWeather 1,163 . Below we show each island's rainfall map and historic weather data for several towns so that you can get an idea of each area's micro climate. in 2010, 2011, etc.) Anecdotally, we went to Kauai in September. The rainiest season is Winter when it rains 27% of the time and the driest is Summer with only a 23% chance of a rainy day. The forecast showed showers every day. Data: 1999 - 2019: avg. Koloa Landing Resort at Poipu, Autograph Collection Show prices Enter dates to see prices 3,117 reviews #1 Best Value of 38 places to stay in Poipu By Pete L "Great location, fantastic pool, and wonderful staff. Their suggestions are to go into the upcountry Kula area, After a six-night visit to Kauai, the memories of the islands beauty still resonate. Chance of rain or snow on an average Poipu day by month, The average amount of time that the sky is clear or sunny (partly cloudy or less) in, Monthly clear skies percent of time in Poipu, Average hours of daylight in Poipu by month, Average relative humidity in Poipu by month, Save all the best places to visit with Wanderlog, Download the travel planning app everyone's been raving about. What is the month with the lowest UV index in Poipu? Some areas are drier than others. Get inspired for your trip to Poipu with our curated itineraries that are jam-packed with popular attractions everyday! The best time to visit is April, May, June, July, August, September, October, November, December. Is it a good idea to postpone the vacation plan in Kauai? This graph shows the average amount of daylight in Poipu in December based on historical data. Both islands would be great to visit in late October and early November. For example, for the hourly temperature at 10am, we've looked at the temperature at 10am on every day in December (e.g., December 1, December 2, etc. Required fields are marked *. is warm and pleasant for relaxing and swimming for long periods. Weve never had a full day that was a complete rainout. Yes, but its complicated, The 24 Best Beaches in Hawaii: Your Beach Bucket List, 24 Things To Do on Kauai with Kids: from toddlers to teenagers. 7 Days. Kahuku It still is a paaradise to visit. December has the shortest days with an average of 10.8 hours of daylight per day. The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi). My bet is rent a convertible and enjoy all parts of the island. Humidity June through August, October and December, with an average relative humidity of 77%, are the most humid months in Poipu. Ft. 5425 Pau A Laka St #831, Koloa, HI 96756. In Poipu, Hawaii, the average low-temperature is 71.8F (22.1C). The months with the lowest average high temperature are February and March (73.2F). There are not a lot of vacation rentals in Waimea or Kekaha. Use this monthly calendar to view weather averages, such as average temperature 14 days ahead of today, as well as the historical weather . Check them out here: Build, organize, and map your itinerary to. Here are 10 Answers to Your Question, Is Airbnb Legal in Hawaii? This site and your information has really helped. Annual average precipitation change from the old 1981-2010 normals to the new 1991-2020 normals. The duration of each day and the amount of sunlight can affect people's moods in a significant way. Daylight In Poipu, Hawaii, the average length of the day in January is 10h and 59min. Even in the wetter, winter months, ts been very rare that weve encountered rain. In Poipu in December, there's a 11% chance of rain on an average day. Overall the surf is much calmer in summer than it is in winter, so snorkeling still may be possible. Lets start with the high and low temperatures. The high seasonal norm is 77F. Do you plan Hawaii vacation activities before your trip or just book them when you get there? The coldest month, March has days with highs of 75F (24C) and lows of 72F (22C). What are the chances of Rain? The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. We are planning our 40th anniversary and it will be our first visit to the islands. Annual average precipitation change from the old 1981-2010 normals to the new 1991-2020 normals. This is the Best Time for Whale Watching in Hawaii (+ key tips), The 10 Best Maui Vacation Rentals for Large Groups, Your First-Time in Hawaii Itinerary (10-Days), Which Part of Oahu Should You Stay: Waikiki or Ko Olina or North Shore, Maui vs Kauai: Pick the Right Island for Your Trip, Why is Waikiki Beach Famous? and took the arithmetic mean. Rainfall In Poipu, Hawaii, during 18.1 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Hurricane season in Kauai, which runs from June through November, is usually quiet, however 2015 has been an unusually busy season for tropical storms. In more common terms of how much that is, some would describe it as heavy rain. On the North Shore, Princeville is a popular destination with vacation accommodations even though the region gets more than twice the amount of rain as the east and south resort areas. The annual average precipitation at Poipu is 9.99 Inches. Read our above reply to Mohit. The consent submitted will only be used for data processing originating from this website. On average, March is the wettest month with 5.7 inch (144 mm) of precipitation. I could go on and on as we truly love kauai. Most people will agree that 70% is pretty high humidity. The wettest month in Poipu is February where a typical day has a 11% chance of precipitation and gets 0.13 inches (3.3 mm) of precipitation, while the dryest month in Poipu is June where a typical day has a 4% chance of precipitation and gets 0.11 inches (2.7 mm) of precipitation. We are in Kauai may 24th through June .6th. Its dry all year round. The average annual temperature in Poipu is 23.7 C | 74.6 F. Look at our suggested itineraries for both islands and see which one appeals to you the most: Big Island itinerary: https://www.govisithawaii.com/2017/06/14/one-week-vacation-itinerary-travel-planner-for-the-big-island-of-hawaii/ Kauai itinerary: https://www.govisithawaii.com/2017/06/01/one-week-kauai-vacation-itinerary-travel-planner/. We did not smooth the data, so for example, our daily temperature line will have some randomness due to the fact that weather is random in the first place. I have been to most of the islands and can honestly say neither has disappointed me. Most occurs at night. Even though weve been to Kauai several times and I know what to expect, the island, Subscribe to our Hawaii travel newsletter. Save my name, email, and website in this browser for the next time I comment. And on the average day it rains or snows, we get0.00in (0.1mm) of precipitation. With 2.3 inches of rain or less, the driest months range from April through September. I understand that boat tours cannot leave from the North Coast that time of year but would we have any issues leaving from the West side? The month with the most sunshine days is January (12.8 days). Unprotected skin risks burning in less than 10 minutes. Temperature C (F), Max. Im debating between going in june-july vs august-september. Win a Floating waterproof bluetooth speaker, Castle Kiahuna Plantation and the Beach Bungalows, Pane Makai Beach House "Turtle Suite"- Poipu, Castle Kiahuna Plantation & The Beach Bungalows, Best Waterproof and Floating Bluetooth Speakers, The Best Beaches and Islands for Luxuriating in Italy, Suping Coron Island - The Best Island in the World, Review or add a beach and win Amazon vouchers, 12 Beaches Featured on Survivor Where You Can Actually Vacation, 47 Movies Filmed on Stunning Beaches You Should Visit. Sunrise and sunset times vary by region in the United States. (Note that some waterfalls dry up or are only a trickle after a dry summer.) Hilton Vacation Club The Point at Poipu Kauai: Broland - Read 1,141 reviews, view 891 photos, and find great deals for Hilton Vacation Club The Point at Poipu Kauai at Tripadvisor Where should you stay, Princeville or Poipu? Poipu Beach Park: Busy but beautiful - See 4,895 traveler reviews, 1,995 candid photos, and great deals for Poipu, HI, at Tripadvisor. The duration of each day and the amount of sunlight can affect people's moods in a significant way. We are planning our first trip to Hawaii in August 2020. a very wet time From what I have been reading August is the hottest month. The months with the highest relative humidity are June, July, August, October and December (77%). Take all precautions because unprotected skin and eyes can burn in minutes. A week is definitely not too long for Kauai or the Big Island! On average, rainfall was most common at the start and end of the year. Chance of rain or snow on an average Poipu day by month, The average amount of time that the sky is clear or sunny (partly cloudy or less) in, Monthly clear skies percent of time in Poipu, Average hours of daylight in Poipu by month, Average relative humidity in Poipu by month, Save all the best places to visit with Wanderlog, Download the travel planning app everyone's been raving about. Unnacceptable. We were also staying in one of the driest regions Poipu. For all data based on historical data, we've averaged the data from the past 11 years (2010-2020). The darker greener areas experience the most rainfall. We were thinking of a few days on Oahu to see a couple sites, then off to either Kauai or the Big Island for a week. Waimnalo Beach, Climate-Data.org / AM OP / OpenStreetMap contributors, Weather by month // weather averages Poipu. Hanalei to visit the beach. Annual Rainfall for Poipu Beach The wettest month in Poipu Beach is March with 22cm of rain and June has the most days of rain with 24.7 days with some rain, a very wet time to visit the beach. (Weather station: Lihue Lihue Airport, USA). Waimea is also the closest jumping off spot to the Waimea Canyon and lots of great hiking and viewpoints above the Napali Coast. Unfortunately, your guess is as good as ours. Overcast. Driving from the airport, if its raining in Lihui (and all the way up to Princesville, then the rain stops and sun comes out right after we drive by Hanapepe (the Friday art show is a lot of fun). Weve visited Kauai in the months of February, April, May and October. The warmest month of the year is September with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 9.99 degrees Fahrenheit. Before we dive into the details, bear in mind that weather history is a fairly descent predictor of future weather. We address air conditioning and the preference for it here: https://www.govisithawaii.com/2018/06/12/tips-choosing-hawaii-vacation-condo-villa/ Weve always wished weve had it when we havent. I was under the impression may-sep would be dry season but it seems many comments mentioned it is rainy even in aug-sep, Hi Sheila We are planning my wifes 50th Birthday trip in Mid march 2023. In Poipu in February, there's a 11 % chance of rain on an average day. Grand Hyatt Kauai Resort & Spa: Grand Hyatt Kauai - Read 9,673 reviews, view 5,668 photos, and find great deals for Grand Hyatt Kauai Resort & Spa at Tripadvisor Our favorite place for a sunset picnic is Polihale Beach and State Park. When we further investigated it, rainfall levels in March were still slightly higher in March as compared to February, which is not as dramatic as the chart appears at first glance. There are many important factors that may affect your personal climate preferences including average temperature and humidity, annual rainfall and snow, number of cloudy days, wind speeds, and more. Poipu, USA: Annual Weather Averages The wettest month is March with an average of 60mm of rain .. Average High/Low Temperature: Poipu High C Low C High F Low F Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0C 5C 10C 15C 20C 25C 30C 35C Average Rainfall: Poipu What is the climate like in Poipu, Hawaii? Its the best tool we have. Grand Hyatt Kauai Resort & Spa: 25th Anniversary - See 9,674 traveler reviews, 5,668 candid photos, and great deals for Grand Hyatt Kauai Resort & Spa at Tripadvisor. For comparison, the hottest month in Poipu, September, has days with highs of 81F (27C) and lows of 78F (26C). The least humid month in Poipu Beach is February with a dew point of 19 which is somewhat uncomfortable for most people in cities but fine on a beach. Poipu in June Average temperature: 24 (76) Average high temperature: 26 (78) Average low temperature: 23 (74) Average humidity: 77% Average sunny days: 5 days Average rainfall: 43mm (2") over 18 days 5 days of pure sunshine 18 days of showers or rain This particular view is one of my favorites in all of Hawaii and, My friend Shane Eubanks of Insider Travel Group recently asked for my opinion on where he should stay on Kauai for a romantic vacation. I know it is hot in aug-sep. The day with the longest amount of daylight in Poipu is June 19th with 13.5 hours while December 15th has the shortest amount of daylight with only 10.8 hours. The month with the highest water temperature is September with 26.90C | 80.42F. If you have further concerns about rain, read our article will it rain on my Hawaii vacation? (Hawaii vacation budget calculator), 9 Proven Strategies for Finding the Lowest Airfares to Hawaii. For comparison, the hottest month in Poipu, September, has days with highs of 81F (27C) and lows of 78F (26C). Kapolei Some of our partners may process your data as a part of their legitimate business interest without asking for consent. The month with the lowest relative humidity is January (75%). The day with the longest amount of daylight in Poipu is June 19th with 13.5 hours while December 15th has the shortest amount of daylight with only 10.8 hours. The month with the highest number of rainy days is August (21.1 days). We want to visit Kauai in June. and took the arithmetic mean. Waimanalo Dwellics instantly analyzes thousands of relevant data points and your selected preferences like lifestyle, weather, community and more to find the perfect place for you to live, Analytics team at Dwellics grouped locations into 5 ranges for each metric: Lowest, Low, Moderate, High, Highest. Manage Settings Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. The last hurricane, Iniki, that hit Kauai and caused any major damage was in 1992. I realize in that you say the rain is brief but to me it looks like major rain storms the whole time we are there. Thankfully the prevailing tradewinds from the northeast, keep you comfortable despite the humidity. We have been going to Kauai for 10+years and have visited in all seasons. The month with the highest relative humidity is December (77.75 %). Poipu Beach Park: Busy but beautiful - See 4,896 traveler reviews, 1,995 candid photos, and great deals for Poipu, HI, at Tripadvisor. This fantastic shot at the Kalalau Valley was captured by reader Peter Lazenby of Nanaimo, British Columbia. In Poipu in March, there's a 7 % chance of rain on an average day. Go Visit Hawaii has been providing award winning Hawaii vacation travel advice since 2006. We did not smooth the data, so for example, our daily temperature line will have some randomness due to the fact that weather is random in the first place. Another point to note about the above rainfall chart is that the significant increase in rainfall between February and March is partially due to the fact that March has more days than February. Unit Settings . The following chart shows the average monthly rainfall levels based on data collected at Kauais main airport in Lihue. When is the worst time to visit Hawaii on vacation? Poipu are in the northern hemisphere. The month with the longest days is June (Average daylight: 13h and 27min). google_ad_slot = "5672289713"; In more common terms of how much that is, some would describe it as heavy rain. Rain showers are usually brief. Most of the rainfall is typically night time and early morning ( particularly along the south shore). The average total rainfall in Poipu Beach in January is 14.4cm and on average there are 19.3 rainy days in January making it a wet time to visit the beach. Every day we must plan our activities around the weather which has been a challenge at times. See our post on two different vacation experiences on the same Hawaiian Island. A lot of rain (rainy season) falls in the months: March, November and December. Some would describe it as pleasantly warm and breezy. Rainfall In July, in Poipu, the rain falls for 20.9 days. //-->,