Haleakala National Park climate and temperatures

Climate type
Mediterranean
Best time to visit
September – November
Avg. temperature
14°C – 30°C
Annual rainfall
600 mm
Warmest month
August (35°C)
Coldest month
January (11°C)
Driest month
July (22 mm)
Wettest month
October (84 mm)

The climate of Haleakala National Park is a tropical savanna climate (Köppen: Aw), characterized by consistently warm temperatures and a dry winter season. Monthly temperatures range from a minimum of 28°C in January to a maximum of 32°C in July. The average annual temperature is around 30°C.

During the colder months, nighttime temperatures average around 18°C, while in the warmer months they average about 23°C.

Climate table of Haleakala National Park

The climate table below gives you a clear overview of the climate in Haleakala National Park by month, from average temperatures and rainfall to UV levels. This makes it easy to see when the weather best suits your travel plans.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Temp. max (°C) 14 16 17 19 23 27 30 30 27 23 18 16
Temp. min (°C) 6 7 9 11 15 19 22 22 19 15 10 7
Rainfall
Droplet
Droplet
Droplet
DropletDroplet
Droplet
Droplet
Droplet
DropletDroplet
DropletDroplet
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Droplet
Rainfall (mm) 46 34 46 64 43 23 22 75 77 84 61 25
UV index 4 5 6 7 8 8 8 8 6 5 4 4

Best time to visit Haleakala National Park

The best time to visit Haleakala National Park is May en November. During this period, temperatures are usually pleasant to warm and there is relatively little rainfall. Between May and November, average high temperatures range roughly from 30°C to 30°C, while rainfall remains limited. For a sun or beach holiday, May, June, July, August, September, October en November are the most suitable months. It is often warm to hot and relatively dry during this time. The warmest month is July, with an average daytime temperature of around 32°C. The driest month is June, with about 12 mm of rainfall, while March is usually the wettest month of the year, with approximately 179 mm. Snow plays virtually no role in the climate here.

Average temperature per month

This chart shows the average daytime (maximum) and nighttime (minimum) temperatures per month in Haleakala National Park. The figures are based on climate data from recent years and are presented in degrees Celsius, so you can clearly see the temperature range for each month.

Average rainfall per month

This chart shows the average monthly rainfall in Haleakala National Park. The figures are based on long-term climate data and are displayed in millimeters, so you can immediately see which months are drier or wetter.

Average UV index per month

This chart shows the average monthly sun intensity in Haleakala National Park. The UV index ranges from 0 (no UV radiation) to 11+ (extreme). A higher UV index means you can burn more quickly, making proper sun protection increasingly important.

Average annual temperature

This chart shows the average annual temperature in Haleakala National Park based on data from the past ten years. It allows you to see at a glance how the climate is evolving and whether there are clear warming trends.

Average annual rainfall

This chart shows the average annual rainfall in Haleakala National Park over the past ten years. It allows you to see at a glance how much rain falls each year and whether there are clear fluctuations between the years.

Weather experiences in Haleakala National Park

The weather in Haleakala National Park is rated an average of 4.3 out of 5 stars by 8 visitors. Have you been to Haleakala National Park? Share your experience with the weather to help other visitors plan their trip.

Average weather per month

Click on a month below and discover what the weather in Haleakala National Park is typically like. For each period, you can instantly see the average temperature, rainfall, wind, and UV index. Thanks to years of historical weather data, you’ll know exactly what to expect during your trip.