California Weather in August

What's the weather like in California (Missouri) in August 2025?

The climate in California during August can be summarized as hot, humid and a little damp.

August is in the summer in California and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (88°F), whilst at night 18°C (65°F) is normal.

California weather averages (imperial / metric)
Daytime temperature 31.2°C 88.1°F
Nightly temperature 18.1°C 64.5°F
Average temperature 24.6°C 76.3°F
Daily sunshine 10 hrs
Avg rainfall 87 mm 3.4 ins
Rainy days 8 days
Sea temperature 22.3°C 72.2°F
Humidity 71%
Windspeed 13.7kph 9 mph

On average August is the 6th driest month of the year in California with around 87mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 10 hours of sunshine per day.

August temperatures in California

California average temperature in August

August rainfall

California average rain in August

August hourly sunshine

California 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 California in August 2025.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

California weather stats

California weather statistics
Hottest month: July 31.9°C 89.4°F
Driest month: January 37mm 1.5ins
Sunniest month: July 10.9hrs
Coldest month: January 3.3°C 37.9°F
Wettest month: May 121mm 4.8ins
Map showing location of California (38.62753, -92.56658) California map pin © Google

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