What is the weather like in Honolulu vs Kauai in September?

In September, Honolulu averages 31°C high / 24°C low with about 34 mm of rain; Kauai averages 26°C high / 21°C low with about 39 mm.

Honolulu vs Kauai in September

Honolulu and Kauai are nearly tied in September — 92 vs 93 on SeasonMap's comfort score. Honolulu is sweltering, a little rain, clean air; Kauai is warm, a little rain, clean air.

Honolulu vs Kauai — September climate, side by side

	🇺🇸 Honolulu	🇺🇸 Kauai
Comfort score	92/100 (S)	93/100 (S)
Feels-like high	34°C	28°C
Avg high / low	31° / 24°	26° / 21°
Rainfall	34 mm	39 mm
Rainy days	6	14
Humidity	73%	76%
Air quality (AQI)	31	22

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

Month by month

Honolulu vs Kauai in September — FAQ

Is September better in Honolulu or Kauai?: Honolulu and Kauai are nearly tied in September — 92 vs 93 on SeasonMap's comfort score. Honolulu is sweltering, a little rain, clean air; Kauai is warm, a little rain, clean air.
What is the weather like in Honolulu vs Kauai in September?: In September, Honolulu averages 31°C high / 24°C low with about 34 mm of rain; Kauai averages 26°C high / 21°C low with about 39 mm.