Hawaiian Islands Humpback Whale National Marine Sanctuary
- Annual mean
- 24.7 °C
- Warmest month
- September
- Wettest month
- March
Twelve-month breakdown of average temperature, precipitation, wind, and daylight patterns
At the representative location for Haleakalā National Park, monthly mean temperatures range from 21.9 to 25.1 °C (1991–2020). Compare precipitation, humidity, wind, and daylight for each month.
Comparing twelve months of consistent temperature ranges and average daily precipitation rates at a representative park coordinate.
Analyze twelve months of average temperature bounds, daily precipitation rates, and wind patterns at a representative park coordinate.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 22.2 °C19.3° to 25° | 1.9 mm/day | 76.3% | 5.4 m/s | 10.9 hours |
| February | 21.9 °C18.7° to 24.9° | 2.1 mm/day | 76.3% | 5.8 m/s | 11.3 hours |
| March | 22.1 °C19.3° to 25.1° | 2.5 mm/day | 76.7% | 6.3 m/s | 11.9 hours |
| April | 22.6 °C20° to 25.4° | 1.6 mm/day | 76.5% | 6.9 m/s | 12.5 hours |
| May | 23.4 °C20.9° to 26.3° | 1.3 mm/day | 76.2% | 6.3 m/s | 13 hours |
| June | 24 °C21.9° to 26.7° | 1 mm/day | 76.3% | 7.4 m/s | 13.2 hours |
| July | 24.6 °C22.4° to 27.3° | 1.1 mm/day | 76.9% | 7.6 m/s | 13.1 hours |
| August | 25 °C22.9° to 27.7° | 1.3 mm/day | 76.6% | 7.4 m/s | 12.7 hours |
| September | 25.1 °C22.8° to 27.8° | 1.3 mm/day | 76% | 6.4 m/s | 12.1 hours |
| October | 24.7 °C22.5° to 27.5° | 1.6 mm/day | 76.9% | 6.2 m/s | 11.5 hours |
| November | 23.8 °C21.5° to 26.7° | 2 mm/day | 77.7% | 6.5 m/s | 11 hours |
| December | 22.8 °C20.5° to 25.6° | 2 mm/day | 77.3% | 6.3 m/s | 10.8 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Analyzing the annual variations in temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Evaluate monthly atmospheric measurements and seasonal variations across diverse geographic settings


Explore the map, landscapes, and protection details for Haleakalā National Park.