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

In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Kauai averages 26°C high / 21°C low with about 39 mm.

Haleakala National Park vs Kauai in September

Kauai is the better pick in September — 93 vs 87 on SeasonMap's comfort score. Kauai is warm, a little rain, clean air, while Haleakala National Park is cool, a little rain, clean air.

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

	🇺🇸 Haleakala National Park	🇺🇸 Kauai
Comfort score	87/100 (A)	93/100 (S)
Feels-like high	15°C	28°C
Avg high / low	17° / 13°	26° / 21°
Rainfall	65 mm	39 mm
Rainy days	21	14
Humidity	78%	76%
Air quality (AQI)	38	22

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

Month by month

Haleakala National Park vs Kauai in September — FAQ

Is September better in Haleakala National Park or Kauai?: Kauai is the better pick in September — 93 vs 87 on SeasonMap's comfort score. Kauai is warm, a little rain, clean air, while Haleakala National Park is cool, a little rain, clean air.
What is the weather like in Haleakala National Park vs Kauai in September?: In September, Haleakala National Park averages 17°C high / 13°C low with about 65 mm of rain; Kauai averages 26°C high / 21°C low with about 39 mm.