What is the weather like in Austin vs Charleston in September?

In September, Austin averages 34°C high / 22°C low with about 63 mm of rain; Charleston averages 29°C high / 23°C low with about 142 mm.

Austin vs Charleston in September

Austin and Charleston are nearly tied in September — 66 vs 69 on SeasonMap's comfort score. Austin is sweltering, a little rain, clean air; Charleston is hot, rainy, clean air.

Austin vs Charleston — September climate, side by side

	🇺🇸 Austin	🇺🇸 Charleston
Comfort score	66/100 (C)	69/100 (C)
Feels-like high	37°C	32°C
Avg high / low	34° / 22°	29° / 23°
Rainfall	63 mm	142 mm
Rainy days	4	6
Humidity	65%	80%
Air quality (AQI)	44	46

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

Month by month

Austin vs Charleston in September — FAQ

Is September better in Austin or Charleston?: Austin and Charleston are nearly tied in September — 66 vs 69 on SeasonMap's comfort score. Austin is sweltering, a little rain, clean air; Charleston is hot, rainy, clean air.
What is the weather like in Austin vs Charleston in September?: In September, Austin averages 34°C high / 22°C low with about 63 mm of rain; Charleston averages 29°C high / 23°C low with about 142 mm.