Haleakala National Park weather in April
April in Haleakala National Park: cool, rainy, with clean air — an excellent time to visit.
#9 of 12 months in Haleakala National Park · #187 of 604 destinations to visit in April · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Haleakala National Park climate normals — April
| Daytime high | 14°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 11°C / 51°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 95 mm / 3.7 in | 🌧 rainy |
| Rainy days | 21 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 9°C / 47°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 12.6 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Haleakala National Park?
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Haleakala National Park in April — FAQ
- Is April a good time to visit Haleakala National Park?
- April in Haleakala National Park: cool, rainy, with clean air — an excellent time to visit. It ranks #9 of 12 months for Haleakala National Park on SeasonMap's comfort score (84/100).
- What is the weather like in Haleakala National Park in April?
- In April, Haleakala National Park averages a daily high of 14.2°C and a low of 10.6°C, with about 94.8 mm of rain over roughly 20.6 rainy days.
- What is the air quality in Haleakala National Park in April?
- Haleakala National Park has a mean US Air Quality Index of about 43 in April.