Costa Mesa Weather in August

What's the weather like in Costa Mesa (California) in August 2024?

The climate in Costa Mesa during August can be summarized as warm, humid and very dry.

August is in the summer in Costa Mesa and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 24°C (76°F), whilst at night 17°C (63°F) is normal.

Costa Mesa weather averages (imperial / metric)
Daytime temperature 24.2°C 75.6°F
Nightly temperature 17.2°C 63°F
Average temperature 20.7°C 69.3°F
Daily sunshine 11.5 hrs
Avg rainfall 2 mm 0.1 ins
Rainy days 0 days
Sea temperature 20.5°C 69°F
Humidity 71%
Windspeed 13kph 8 mph

On average August is the 3rd driest month of the year in Costa Mesa with around 2mm 0.1 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 11.5 hours of sunshine per day.

August temperatures in Costa Mesa

Costa Mesa average temperature in August

August rainfall

Costa Mesa average rain in August

August hourly sunshine

Costa Mesa average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Costa Mesa in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Costa Mesa weather stats

Costa Mesa weather statistics
Hottest month: August 24°C 75.2°F
Driest month: July 1mm 0ins
Sunniest month: August 11.5hrs
Coldest month: January 18°C 64.4°F
Wettest month: January 64mm 2.5ins
Map showing location of Costa Mesa (33.64113, -117.91867) Costa Mesa map pin © Google

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