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

In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Hilo averages 29°C high / 21°C low with about 167 mm.

Haleakala National Park vs Hilo in September

Haleakala National Park is the better pick in September — 87 vs 69 on SeasonMap's comfort score. Haleakala National Park is cool, a little rain, clean air, while Hilo is sweltering, soaked, clean air.

Haleakala National Park vs Hilo — September climate, side by side

	🇺🇸 Haleakala National Park	🇺🇸 Hilo
Comfort score	87/100 (A)	69/100 (C)
Feels-like high	15°C	34°C
Avg high / low	17° / 13°	29° / 21°
Rainfall	65 mm	167 mm
Rainy days	21	20
Humidity	78%	83%
Air quality (AQI)	38	19

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

Month by month

Haleakala National Park vs Hilo in September — FAQ

Is September better in Haleakala National Park or Hilo?: Haleakala National Park is the better pick in September — 87 vs 69 on SeasonMap's comfort score. Haleakala National Park is cool, a little rain, clean air, while Hilo is sweltering, soaked, clean air.
What is the weather like in Haleakala National Park vs Hilo in September?: In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Hilo averages 29°C high / 21°C low with about 167 mm.