Weather in San Diego in August

General weather information about San Diego

Average annual temperature is 20.7 °C

Absolute maximum temperature: 38.6 °C

Absolute minimum temperature: 2.7 °C

Number of sunny days: 138 days

Number of rainy days: 227 days

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)30.332.536.235.935.738.633.037.534.732.533.227.7
Average daytime temperature (°C)24.925.730.130.429.934.231.032.032.426.823.719.7
Average temperature (°C)16.716.720.721.822.626.023.724.224.620.516.714.4
Average night temperature (°C)10.410.213.515.917.119.218.218.018.015.911.710.5
Absolute minimum temperature (°C)2.73.47.010.313.016.514.815.816.49.46.35.5

San Diego monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)11.011.012.012.013.013.013.013.012.011.011.010.0
Daylight mean duration (h)10.911.412.012.713.213.513.412.912.311.611.110.8
Daylight minimum duration (h)10.011.011.012.012.013.013.012.011.011.010.010.0
Sunshine mean duration (h)9.09.610.010.211.412.411.911.511.38.57.55.9
Precipitation (mm)1710195713441946526923260
Sunny days2120188513151191611
Rainy days10813222617302619221420
Snow days000000000000

Best time to visit San Diego:

The best time to visit San Diego during the most sunny months:

  • June — 12.4(h)

The largest precipitation sum in San Diego is at

  • May — 134(mm)
  • July — 94(mm)
  • October — 92(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.