San Diego Weather in May
United States · 30-year monthly averages
🌟 Great time to visit
May in San Diego is pleasantly warm, with average daytime highs around 21°C (70°F) and nighttime lows near 16°C (60°F). Expect roughly 7mm of precipitation spread over about 1 rainy days, and rain is rare.
Avg high
21°C
70°F
Avg low
16°C
60°F
Rainfall
7mm
very dry
Rainy days
1
days with ≥1mm
🎒 What to pack
- light layers
- comfortable walking shoes
May vs the rest of the year
FAQ
- How hot is San Diego in May?
- May in San Diego is pleasantly warm, with average daytime highs around 21°C (70°F) and nighttime lows near 16°C (60°F). Expect roughly 7mm of precipitation spread over about 1 rainy days, and rain is rare.
- Does it rain a lot in San Diego in May?
- San Diego sees around 7mm of precipitation in May on average — very dry by global standards.
- Is May a good time to visit San Diego?
- May is one of the best months to visit San Diego — comfortable temperatures and manageable rainfall.