Best year time to visit Costa Mesa

General weather information about Costa Mesa

Average annual temperature is 16.1 °C

Absolute maximum temperature: 29.5 °C

Absolute minimum temperature: 3.6 °C

Number of sunny days: 243 days

Number of rainy days: 122 days

Look at detailed online map of Costa Mesa

* Weather data for Costa Mesa United States is based on climate observations for 2026 year

Costa Mesa air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)19.220.419.224.420.221.329.526.827.328.126.823.8
Average daytime temperature (°C)15.415.514.817.318.419.724.124.223.323.921.818.9
Average temperature (°C)12.111.611.914.015.817.119.920.619.919.016.914.6
Average night temperature (°C)9.07.89.211.413.715.116.617.517.215.012.410.8
Absolute minimum temperature (°C)5.33.83.67.410.312.613.715.113.511.09.38.2

Costa Mesa monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.211.012.013.013.914.314.113.412.411.310.410.0
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.88.67.910.49.710.411.910.79.49.78.87.5
Precipitation (mm)224120207423708666422113
Sunny days151814241316312615262223
Rainy days161017618140515588
Snow days000000000000

Costa Mesa - weather forecast by months

Costa Mesa weather in januaryCosta Mesa weather in februaryCosta Mesa weather in marchCosta Mesa weather in aprilCosta Mesa weather in mayCosta Mesa weather in juneCosta Mesa weather in julyCosta Mesa weather in augustCosta Mesa weather in septemberCosta Mesa weather in octoberCosta Mesa weather in novemberCosta Mesa weather in december

Best time to visit Costa Mesa:

The best time to visit Costa Mesa during the most sunny months:

  • July — 11.9(h)

The largest precipitation sum in Costa Mesa is at

  • January — 224(mm)
  • February — 120(mm)
  • March — 207(mm)
  • December — 113(mm)

    • Weather forecast in the closest to Costa Mesa admin centers

    Weather forecast in the closest towns to Costa Mesa

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    Frequently asked questions

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