Jamestown Weather in August

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

The climate in Jamestown during August can be summarized as hot and very dry.

August is in the summer in Jamestown and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 34°C (93°F), whilst at night 14°C (56°F) is normal.

Jamestown weather averages (imperial / metric)
Daytime temperature 34°C 93.1°F
Nightly temperature 13.5°C 56.2°F
Average temperature 23.7°C 74.7°F
Daily sunshine 13.5 hrs
Avg rainfall 4 mm 0.2 ins
Rainy days 1 days
Sea temperature 15.9°C 60.6°F
Humidity 46%
Windspeed 13.3kph 8 mph

On average August is the 2nd driest month of the year in Jamestown with around 4mm 0.2 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 13.5 hours of sunshine per day.

August temperatures in Jamestown

Jamestown average temperature in August

August rainfall

Jamestown average rain in August

August hourly sunshine

Jamestown 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 Jamestown 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

Jamestown weather stats

Jamestown weather statistics
Hottest month: July 34.1°C 93.4°F
Driest month: July 2mm 0.1ins
Sunniest month: July 14.6hrs
Coldest month: December 11.2°C 52.2°F
Wettest month: January 132mm 5.2ins
Map showing location of Jamestown (37.95326, -120.4227) Jamestown map pin © Google

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