What is the weather like in Houston vs San Antonio in September?

In September, Houston averages 33°C high / 24°C low with about 180 mm of rain; San Antonio averages 35°C high / 22°C low with about 85 mm.

Houston vs San Antonio in September

Houston and San Antonio are nearly tied in September — 61 vs 64 on SeasonMap's comfort score. Houston is sweltering, soaked, muggy air; San Antonio is sweltering, rainy, clean air.

Houston vs San Antonio — September climate, side by side

	🇺🇸 Houston	🇺🇸 San Antonio
Comfort score	61/100 (C)	64/100 (C)
Feels-like high	37°C	37°C
Avg high / low	33° / 24°	35° / 22°
Rainfall	180 mm	85 mm
Rainy days	8	5
Humidity	77%	65%
Air quality (AQI)	54	42

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

Month by month

Houston vs San Antonio in September — FAQ

Is September better in Houston or San Antonio?: Houston and San Antonio are nearly tied in September — 61 vs 64 on SeasonMap's comfort score. Houston is sweltering, soaked, muggy air; San Antonio is sweltering, rainy, clean air.
What is the weather like in Houston vs San Antonio in September?: In September, Houston averages 33°C high / 24°C low with about 180 mm of rain; San Antonio averages 35°C high / 22°C low with about 85 mm.