San Francisco Weather in September

What's the weather like in San Francisco (Central Luzon) in September 2024?

The climate in San Francisco during September can be summarized as hot, humid and very wet.

September is in the fall / autumn in San Francisco and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 23°C (74°F) is normal.

San Francisco weather averages (imperial / metric)
Daytime temperature 31.1°C 87.9°F
Nightly temperature 23.2°C 73.7°F
Average temperature 27.1°C 80.8°F
Daily sunshine 6.2 hrs
Avg rainfall 416 mm 16.4 ins
Rainy days 21 days
Sea temperature 29.3°C 84.8°F
Humidity 85%
Windspeed 6.5kph 4 mph

On average September is the 3rd wettest month of the year in San Francisco with around 416mm 16.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.2 hours of sunshine per day.

September temperatures in San Francisco

San Francisco average temperature in September

September rainfall

San Francisco average rain in September

September hourly sunshine

San Francisco 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 Francisco in September 2024.

Other monthly averages

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San Francisco weather stats

San Francisco weather statistics
Hottest month: May 33.6°C 92.5°F
Driest month: February 3mm 0.1ins
Sunniest month: April 9.6hrs
Coldest month: January 30.6°C 87.1°F
Wettest month: August 654mm 25.7ins
Map showing location of San Francisco (15.6287, 120.4368) San Francisco map pin © Google

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