San Diego Weather in January
United States · 30-year monthly averages
🌟 Great time to visit
January in San Diego is pleasantly warm, with average daytime highs around 19°C (66°F) and nighttime lows near 10°C (50°F). Expect roughly 50mm of precipitation spread over about 5 rainy days, with little rainfall.
Avg high
19°C
66°F
Avg low
10°C
50°F
Rainfall
50mm
dry
Rainy days
5
days with ≥1mm
🎒 What to pack
- light layers
- comfortable walking shoes
January vs the rest of the year
FAQ
- How hot is San Diego in January?
- January in San Diego is pleasantly warm, with average daytime highs around 19°C (66°F) and nighttime lows near 10°C (50°F). Expect roughly 50mm of precipitation spread over about 5 rainy days, with little rainfall.
- Does it rain a lot in San Diego in January?
- San Diego sees around 50mm of precipitation in January on average — dry by global standards.
- Is January a good time to visit San Diego?
- January is one of the best months to visit San Diego — comfortable temperatures and manageable rainfall.