San Diego weather by month › January
San Diego in January: weather and what to expect
It’s fine, but not the best. March to April and October are more pleasant.
January weather in San Diego
Daytime high69°F 20°C
Night low48°F 9°C
Rain1.8 in 46 mm
AirDry
SunModerate sun
In January, San Diego averages highs of 69°F (20°C) and lows of 48°F (9°C), with 1.8 in (46 mm) of rain. The air feels dry and the sun is moderate. 1991–2020 averages, not a forecast.
Pack: light layers, a sweater for evenings.
Places with the same weather in January
Match out of 100 for January, one city per country.
- Tijuana Mexico · 69°F highs97
- Alexandria Egypt · 66°F highs87
- Hafar Al-Batin Saudi Arabia · 67°F highs86
- Chandigarh India · 66°F highs85
- Foshan China · 65°F highs85
- Agadir Morocco · 68°F highs84
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