The best times to visit Haleakalā National Park for ideal weather are
December 3rd to April 29th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Haleakalā National Park Travel Guide
Other Haleakalā National Park Travel Info
Weather in Haleakalā National Park
Average temperatures in Haleakalā National Park vary very little. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a very low chance of rain throughout the year. The area is somewhat temperate — in the 52nd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Haleakalā National Park, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid to late August where highs are regularly around 89.5°F (31.9°C) with temperatures rarely dropping below 71.1°F (21.7°C) at night.
Haleakalā National Park Temperatures (Fahrenheit)
Haleakalā National Park Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Haleakalā National Park Perceived Temperature (F)
Haleakalā National Park Perceived Temperature (C)
Average Haleakalā National Park Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Haleakalā National Park are September, June, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid June. For example, on the week of June 11th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 2 days of significant precipitation the week of January 29th.
When can you find snow in Haleakalā National Park? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Haleakalā National Park.
Snow on the Ground
The graph below shows the average snow on the ground in Haleakalā National Park (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Haleakalā National Park has some high humidity months, with other comfortably humid months. The least humid month is June (58.5% relative humidity), and the most humid month is December (66.2%).
Wind in Haleakalā National Park is usually moderate. The windiest month is June, followed by July and August. June’s average wind speed of around 12.8 knots (14.7 MPH or 23.6 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid June where average top sustained speeds reach 23.2 knots, which is considered a strong breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Haleakalā National Park.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||8.8||Gentle breeze||17.6||Strong breeze|
|Feb||9.2||Gentle breeze||17.8||Strong breeze|
|Mar||10.6||Gentle breeze||19||Strong breeze|
|Apr||10.8||Gentle breeze||19.4||Strong breeze|
|May||10.5||Gentle breeze||19||Strong breeze|
|Jun||12.8||Significant breeze||22.1||Very strong breeze|
|Jul||12.6||Significant breeze||22||Strong breeze|
|Aug||12.4||Significant breeze||21.7||Strong breeze|
|Sep||11||Significant breeze||20.5||Strong breeze|
|Oct||9.7||Gentle breeze||18.6||Strong breeze|
|Nov||9.6||Gentle breeze||18||Strong breeze|
|Dec||8.9||Gentle breeze||17.2||Strong breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Haleakalā National Park?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Haleakalā National Park, the United States is July, followed by March and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Haleakalā National Park in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Haleakalā National Park Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 86.9°F (30.5°C) and 81.2°F (27.3°C) with warmer temperatures in the later months. Rain is rare with 2 to 4 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with about 1 days of precipitation per month. June – August is fairly slow season for tourism in Haleakalā National Park, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 88.8°F (31.6°C) and 83.3°F (28.5°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 0 to 3 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is perfect this time of year in Haleakalā National Park to be enjoyable for warm weather travelers. The average high during this season is between 83.5°F (28.6°C) and 80.6°F (27°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are the busiest with tourists.