Santa Cruz Weather in September

What's the weather like in Santa Cruz (California) in September 2025?

The climate in Santa Cruz during September can be summarized as mild and dry.

September is in the fall / autumn in Santa Cruz and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 24°C (76°F), whilst at night 11°C (51°F) is normal.

Santa Cruz weather averages (imperial / metric)
Daytime temperature 24.2°C 75.5°F
Nightly temperature 10.5°C 50.8°F
Average temperature 17.3°C 63.1°F
Daily sunshine 10.1 hrs
Avg rainfall 10 mm 0.4 ins
Rainy days 2 days
Sea temperature 15.1°C 59.2°F
Humidity 70%
Windspeed 15.1kph 9 mph

On average September is the 4th driest month of the year in Santa Cruz with around 10mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.1 hours of sunshine per day.

September temperatures in Santa Cruz

Santa Cruz average temperature in September

September rainfall

Santa Cruz average rain in September

September hourly sunshine

Santa Cruz average rain in September

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 Santa Cruz in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Santa Cruz weather stats

Santa Cruz weather statistics
Hottest month: August 23.6°C 74.5°F
Driest month: July 3mm 0.1ins
Sunniest month: April 11.1hrs
Coldest month: December 14.8°C 58.6°F
Wettest month: January 156mm 6.1ins
Map showing location of Santa Cruz (36.97412, -122.0308) Santa Cruz map pin © Google

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