Weather in San Diego in January

General weather information about San Diego

Average annual temperature is 16.9 °C

Absolute maximum temperature: 35.0 °C

Absolute minimum temperature: -1.3 °C

Number of sunny days: 175 days

Number of rainy days: 189 days

Number of snow days: 1 day

Look at detailed online map of San Diego

* Weather data for San Diego Mexico is based on climate observations for 2026 year

San Diego air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)22.826.128.027.628.935.030.632.530.127.325.923.6
Average daytime temperature (°C)17.418.121.221.423.129.028.428.927.421.217.015.8
Average temperature (°C)11.712.214.916.018.122.822.422.821.516.712.511.0
Average night temperature (°C)6.97.39.511.213.116.215.916.315.212.69.27.4
Absolute minimum temperature (°C)0.6-0.4-1.37.210.411.913.914.611.73.63.51.3

San Diego monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.013.013.013.013.012.011.011.010.0
Daylight mean duration (h)10.811.312.012.813.413.713.513.012.311.610.910.6
Daylight minimum duration (h)10.011.011.012.013.013.013.012.011.011.010.010.0
Sunshine mean duration (h)9.410.19.69.910.312.512.411.811.18.67.27.7
Precipitation (mm)6076691012056565216313027
Sunny days222716851891113101818
Rainy days9114222612222017211213
Snow days001000000000

Best time to visit San Diego:

The largest precipitation sum in San Diego is at

  • May — 101(mm)
  • October — 163(mm)
  • November — 130(mm)
  • Frequently asked questions

    When is the best time to visit San Diego?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit San Diego.
    What is the weather like in San Diego?
    See average temperature, rainfall and daylight hours for San Diego by month in the table above.
    How many sunny days does San Diego have?
    The monthly weather statistics above show sunshine and rainfall patterns for San Diego throughout the year.