Places › San Diego, CA › January

San Diego in January

A good month — score 74 of 100

Typical January days in San Diego reach about 66°F with nights near 50°F.

What to pack for San Diego in January

• A light jacket or fleece for evenings.
• A compact rain layer — about 6 days see rain in a typical January.

Every packing line is triggered by a number on this page — the rules are on How we pick.

January vs. the alternatives

The whole year in San Diego

Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.