What is the weather like in Haleakala National Park vs Hawaii Volcanoes National Park in September?

In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Hawaii Volcanoes National Park averages 21°C high / 16°C low with about 123 mm.

Haleakala National Park vs Hawaii Volcanoes National Park in September

Haleakala National Park is the better pick in September — 87 vs 83 on SeasonMap's comfort score. Haleakala National Park is cool, a little rain, clean air, while Hawaii Volcanoes National Park is nice, rainy, clean air.

Haleakala National Park vs Hawaii Volcanoes National Park — September climate, side by side

	🇺🇸 Haleakala National Park	🇺🇸 Hawaii Volcanoes National Park
Comfort score	87/100 (A)	83/100 (A)
Feels-like high	15°C	22°C
Avg high / low	17° / 13°	21° / 16°
Rainfall	65 mm	123 mm
Rainy days	21	18
Humidity	78%	81%
Air quality (AQI)	38	19

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Haleakala National Park 🇺🇸 United Statescool, a little rain, clean air · best June87
Hawaii Volcanoes National Park 🇺🇸 United Statesnice, rainy, clean air · best June83

Haleakala National Park vs Hawaii Volcanoes National Park in September — FAQ

Is September better in Haleakala National Park or Hawaii Volcanoes National Park?: Haleakala National Park is the better pick in September — 87 vs 83 on SeasonMap's comfort score. Haleakala National Park is cool, a little rain, clean air, while Hawaii Volcanoes National Park is nice, rainy, clean air.
What is the weather like in Haleakala National Park vs Hawaii Volcanoes National Park in September?: In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Hawaii Volcanoes National Park averages 21°C high / 16°C low with about 123 mm.