San Andreas Weather in September

What's the weather like in San Andreas (California) in September 2025?

The climate in San Andreas during September can be summarized as warm and dry.

September is in the fall / autumn in San Andreas and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (87°F), whilst at night 11°C (52°F) is normal.

San Andreas weather averages (imperial / metric)
Daytime temperature 30.5°C 86.9°F
Nightly temperature 10.9°C 51.6°F
Average temperature 20.7°C 69.3°F
Daily sunshine 12.4 hrs
Avg rainfall 14 mm 0.6 ins
Rainy days 2 days
Sea temperature 15.6°C 60.2°F
Humidity 51%
Windspeed 12.2kph 8 mph

On average September is the 4th driest month of the year in San Andreas with around 14mm 0.6 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 12.4 hours of sunshine per day.

September temperatures in San Andreas

San Andreas average temperature in September

September rainfall

San Andreas average rain in September

September hourly sunshine

San Andreas 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 San Andreas 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

San Andreas weather stats

San Andreas weather statistics
Hottest month: July 33.9°C 93°F
Driest month: July 3mm 0.1ins
Sunniest month: July 14.8hrs
Coldest month: January 12.3°C 54.1°F
Wettest month: January 138mm 5.4ins
Map showing location of San Andreas (38.19603, -120.68049) San Andreas map pin © Google

Locations nearby

Top United States locations