What is the weather like in Boston vs San Francisco in August?

In August, Boston averages 29°C high / 19°C low with about 86 mm of rain; San Francisco averages 20°C high / 14°C low with about 1 mm.

Boston vs San Francisco in August

San Francisco is the better pick in August — 95 vs 80 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Boston is hot, rainy.

Boston vs San Francisco — August climate, side by side

	Boston	San Francisco
Comfort score	80/100 (A)	95/100 (S)
Feels-like high	30°C	21°C
Avg high / low	29° / 19°	20° / 14°
Rainfall	86 mm	1 mm
Rainy days	8	0
Humidity	73%	76%
Air quality (AQI)	52	35

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

Boston vs San Francisco in August — FAQ

Is August better in Boston or San Francisco?: San Francisco is the better pick in August — 95 vs 80 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Boston is hot, rainy.
What is the weather like in Boston vs San Francisco in August?: In August, Boston averages 29°C high / 19°C low with about 86 mm of rain; San Francisco averages 20°C high / 14°C low with about 1 mm.