What is the weather like in Biscayne National Park vs Key West in September?

In September, Biscayne National Park averages 32°C high / 26°C low with about 182 mm of rain; Key West averages 32°C high / 26°C low with about 195 mm.

Biscayne National Park vs Key West in September

Key West is the better pick in September — 76 vs 48 on SeasonMap's comfort score. Key West is sweltering, soaked, clean air, while Biscayne National Park is sweltering, soaked, clean air.

Biscayne National Park vs Key West — September climate, side by side

	🇺🇸 Biscayne National Park	🇺🇸 Key West
Comfort score	48/100 (F)	76/100 (B)
Feels-like high	37°C	37°C
Avg high / low	32° / 26°	32° / 26°
Rainfall	182 mm	195 mm
Rainy days	16	13
Humidity	83%	79%
Air quality (AQI)	32	35

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

Month by month

Biscayne National Park vs Key West in September — FAQ

Is September better in Biscayne National Park or Key West?: Key West is the better pick in September — 76 vs 48 on SeasonMap's comfort score. Key West is sweltering, soaked, clean air, while Biscayne National Park is sweltering, soaked, clean air.
What is the weather like in Biscayne National Park vs Key West in September?: In September, Biscayne National Park averages 32°C high / 26°C low with about 182 mm of rain; Key West averages 32°C high / 26°C low with about 195 mm.