What’s the weather like on Maui? We’ll cover all the important weather questions to help you get to know this amazing Hawaiian island.
The following chart shows the average monthly high and low temperatures. The data was collected from the airport in Kahului (OGG) which is fairly representative of the main beach resort areas.
Maui’s weather is warm throughout the year. Even in the thick of the “cold” winter months, tropical flowers flourish with blooms. In fact, the photo at the top of this guide was taken in February.
The coldest months of January and February average 81°F for daytime high temperatures while the evenings chill off to an average of 63°F. While you’ll be wearing shorts or swimwear in the day, you might want a light sweater or jacket in the evenings. (To convert temperatures to Celcius, use this link.)
In the beach resorts, summer months heat up to an average around 88°F. Average summer evening temperatures only dip to the low 70s.
The temperatures in Maui’s higher elevations are significantly lower than from Kahului. If you go to the Upcountry, like Kula for example, you can expect temperatures to be 5°-10°lower. You might want to have a light sweater with you when you visit Maui’s Upcountry.
If you venture even higher, towards the summit of Haleakala at 10,023 feet above sea level, you can expect even chillier temperatures. Generally speaking the weather at the summit is about 30°F colder than temperatures near sea level at Kahului. If the weather is windy at the summit, which it often is, it feels more cold.
Maui Rain Levels
Before we look at the Maui rainfall data, we should note that in Hawaii, more rain falls overnight than during the daytime. That doesn’t mean that you are guaranteed rain-free days. Though rain can and does fall during daytime hours, rain showers are typically brief and are followed by one of Hawaii’s famous rainbows.
The following chart shows the average monthly rainfall data that was gathered from Maui’s main airport in Kahului (OGG).
Note that the rainiest months are December, January and March — primarily winter months. Does that mean you can expect lots rainy days during those months? Not necessarily. We’ve visited Maui several times in winter months and enjoyed plenty of beautiful sunny days. In fact, I can’t recall a day where we were rained out. If you do encounter a rain-drenched day, check out these fun and interesting things to do on Maui when it rains.
Even though winter months tend to be a little wetter, we wouldn’t hesitate to book a Hawaii vacation in the winter. In fact, we tend to go to Hawaii quite often in the winter and it’s been very rare that we’ve encountered rain. We’ve never had a full day that was a complete rainout.
Rain in Hawaii brings some benefits that we tourists enjoy. Rain makes the pretty waterfalls flow. (Note that some waterfalls dry up or are only a trickle after a dry summer.) The rain makes Hawaii’s delicious produce grow and the flowers bloom.
If you have further concerns about rain, read our article — will it rain on my Hawaii vacation?
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. 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.
If you want to optimize your chances of sunshine on your Maui vacation, aim to visit during the months that are historically the driest — from June through September.
The following Maui Nui (Maui, Molokai, Lanai and Kahoolawe) rainfall map shows how rainfall is distributed geographically. The normal pattern is that the east and north facing areas and mountains receive the most rain.
As you review the above rainfall atlas of Maui it’s also useful to consider the follow satellite view of Maui. The darker green areas indicate higher levels of rain, while the tan areas are drier regions.
When considering where to stay on Maui as it relates to the weather. West Maui and South Maui resorts will tend to be the sunniest. As we’ve previously mentioned, winter months tend to be rainier. When we visit in winter, we almost always stay in South Maui which is a slightly drier than West Maui and much drier that East Maui. With these micro-climates, you may want to consider splitting your time between regions.
Ocean Temperature at Maui
You can swim in the ocean and enjoy water sports any time of year on Maui. According to this site, water temperatures near Honolulu range from 76°F in winter months to 80°F in late summer and early fall.
The relative humidity for Kahului, Maui averages around 71%. That may seem uncomfortably high, but when the tradewinds blow, which they do most of the time, that breeze keeps you comfortable. See the Kahului chart on this page for more humidity details.
Besides relying on the tradewinds, you can do a couple of things to help you feel more comfortable in the humidity. First, we recommend you stay in an accommodation that has ample air conditioning. Last year, some of our friends stayed in a Maui condo that had one, under-sized air conditioning unit that wasn’t large enough to properly cool the entire condo. They were uncomfortable for several days. The other tip to combat humidity is to wear breathable, light clothing.
Maui Hurricane Season
Though Hawaii is currently experiencing a busy tropical storm season in 2015, that has thankfully skirted around the islands, hurricane season is normally a non-factor in Hawaii. Hurricane season runs from June through November with the months of August and September historically being the most active.
We’ve reviewed quite a bit of Maui weather data that are based on averages over years of data collection. Though past weather and overall trends can be a good predictor of future weather, that’s not always the case. Weather can be unpredictable.
Check our Hawaii weather page for the upcoming Maui forecast.
Before you ask any rain questions, please read this article —> Will it rain on my Hawaii vacation?
Have you visited Maui? What time of year did you visit? What was your experience with the weather.