Haleakala National Park weather in July
July in Haleakala National Park: cool, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Haleakala National Park · #154 of 604 destinations to visit in July · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Haleakala National Park climate normals — July
| Daytime high | 17°C / 62°F | 🙂 cool |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 87 mm / 3.4 in | 🌧 rainy |
| Rainy days | 24 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 12 h/day | |
| Daylight | 13.2 h | |
| Wind | 25 km/h / 16 mph | |
| Air quality (US AQI) | 41 | 🍃 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 July — FAQ
- Is July a good time to visit Haleakala National Park?
- July in Haleakala National Park: cool, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Haleakala National Park on SeasonMap's comfort score (87/100).
- What is the weather like in Haleakala National Park in July?
- In July, Haleakala National Park averages a daily high of 16.9°C and a low of 13.1°C, with about 86.6 mm of rain over roughly 24 rainy days.
- What is the air quality in Haleakala National Park in July?
- Haleakala National Park has a mean US Air Quality Index of about 41 in July.