What is the weather like in Mumbai vs San Francisco in September?

In September, Mumbai averages 31°C high / 25°C low with about 467 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.

Mumbai vs San Francisco in September

San Francisco is the better pick in September — 96 vs 43 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Mumbai is sweltering, soaked, muggy air.

Mumbai vs San Francisco — September climate, side by side

	🇮🇳 Mumbai	🇺🇸 San Francisco
Comfort score	43/100 (F)	96/100 (S)
Feels-like high	37°C	21°C
Avg high / low	31° / 25°	22° / 14°
Rainfall	467 mm	3 mm
Rainy days	27	1
Humidity	87%	75%
Air quality (AQI)	65	35

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

Month by month

Mumbai vs San Francisco in September — FAQ

Is September better in Mumbai or San Francisco?: San Francisco is the better pick in September — 96 vs 43 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Mumbai is sweltering, soaked, muggy air.
What is the weather like in Mumbai vs San Francisco in September?: In September, Mumbai averages 31°C high / 25°C low with about 467 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.