Sonoma Weather in May

What's the weather like in Sonoma (California) in May 2025?

The climate in Sonoma during May can be summarized as mild and dry.

May is in the spring in Sonoma and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 8°C (47°F) is normal.

Sonoma weather averages (imperial / metric)
Daytime temperature 22.3°C 72.1°F
Nightly temperature 8.2°C 46.7°F
Average temperature 15.2°C 59.4°F
Daily sunshine 12 hrs
Avg rainfall 13 mm 0.5 ins
Rainy days 3 days
Sea temperature 11.8°C 53.2°F
Humidity 67%
Windspeed 19.1kph 12 mph

On average May is the 5th driest month of the year in Sonoma with around 13mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 12 hours of sunshine per day.

May temperatures in Sonoma

Sonoma average temperature in May

May rainfall

Sonoma average rain in May

May hourly sunshine

Sonoma average rain in May

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 Sonoma in May 2025.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Sonoma weather stats

Sonoma weather statistics
Hottest month: August 26.7°C 80.1°F
Driest month: July 1mm 0ins
Sunniest month: April 11.2hrs
Coldest month: January 13.1°C 55.6°F
Wettest month: January 172mm 6.8ins
Map showing location of Sonoma (38.29186, -122.45804) Sonoma map pin © Google

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