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

In August, San Francisco averages 20°C high / 14°C low with about 1 mm of rain; Seattle averages 25°C high / 15°C low with about 12 mm.

San Francisco vs Seattle in August

San Francisco and Seattle are nearly tied in August — 95 vs 95 on SeasonMap's comfort score. San Francisco is nice, dry, clean air; Seattle is warm, dry, clean air.

San Francisco vs Seattle — August climate, side by side

	San Francisco	Seattle
Comfort score	95/100 (S)	95/100 (S)
Feels-like high	21°C	25°C
Avg high / low	20° / 14°	25° / 15°
Rainfall	1 mm	12 mm
Rainy days	0	2
Humidity	76%	67%
Air quality (AQI)	35	44

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

San Francisco vs Seattle in August — FAQ

Is August better in San Francisco or Seattle?: San Francisco and Seattle are nearly tied in August — 95 vs 95 on SeasonMap's comfort score. San Francisco is nice, dry, clean air; Seattle is warm, dry, clean air.
What is the weather like in San Francisco vs Seattle in August?: In August, San Francisco averages 20°C high / 14°C low with about 1 mm of rain; Seattle averages 25°C high / 15°C low with about 12 mm.