San Francisco Weather in May
United States · 30-year monthly averages
🌟 Great time to visit
May in San Francisco is pleasantly warm, with average daytime highs around 20°C (68°F) and nighttime lows near 11°C (52°F). Expect roughly 12mm of precipitation spread over about 2 rainy days, and rain is rare.
Avg high
20°C
68°F
Avg low
11°C
52°F
Rainfall
12mm
very dry
Rainy days
2
days with ≥1mm
🎒 What to pack
- light layers
- comfortable walking shoes
May vs the rest of the year
FAQ
- How hot is San Francisco in May?
- May in San Francisco is pleasantly warm, with average daytime highs around 20°C (68°F) and nighttime lows near 11°C (52°F). Expect roughly 12mm of precipitation spread over about 2 rainy days, and rain is rare.
- Does it rain a lot in San Francisco in May?
- San Francisco sees around 12mm of precipitation in May on average — very dry by global standards.
- Is May a good time to visit San Francisco?
- May is one of the best months to visit San Francisco — comfortable temperatures and manageable rainfall.