What is the weather like in Napa vs San Francisco in May?

In May, Napa averages 25°C high / 10°C low with about 17 mm of rain; San Francisco averages 18°C high / 11°C low with about 15 mm.

Napa vs San Francisco in May

Napa is the better pick in May — 95 vs 88 on SeasonMap's comfort score. Napa is warm, dry, clean air, while San Francisco is nice, dry, clean air.

Napa vs San Francisco — May climate, side by side

	🇺🇸 Napa	🇺🇸 San Francisco
Comfort score	95/100 (S)	88/100 (A)
Feels-like high	25°C	17°C
Avg high / low	25° / 10°	18° / 11°
Rainfall	17 mm	15 mm
Rainy days	2	2
Humidity	60%	73%
Air quality (AQI)	36	42

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

Month by month

Napa 🇺🇸 United Stateswarm, dry, clean air · best May95
San Francisco 🇺🇸 United Statesnice, dry, clean air · best September88

Napa vs San Francisco in May — FAQ

Is May better in Napa or San Francisco?: Napa is the better pick in May — 95 vs 88 on SeasonMap's comfort score. Napa is warm, dry, clean air, while San Francisco is nice, dry, clean air.
What is the weather like in Napa vs San Francisco in May?: In May, Napa averages 25°C high / 10°C low with about 17 mm of rain; San Francisco averages 18°C high / 11°C low with about 15 mm.