Pismo Beach Weather in September

What's the weather like in Pismo Beach (California) in September 2025?

The climate in Pismo Beach during September can be summarized as warm and very dry.

September is in the fall / autumn in Pismo Beach and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 12°C (53°F) is normal.

Pismo Beach weather averages (imperial / metric)
Daytime temperature 25°C 76.9°F
Nightly temperature 11.5°C 52.6°F
Average temperature 18.2°C 64.8°F
Daily sunshine 9.9 hrs
Avg rainfall 9 mm 0.3 ins
Rainy days 2 days
Sea temperature 17°C 62.6°F
Humidity 77%
Windspeed 10.4kph 7 mph

On average September is the 5th driest month of the year in Pismo Beach with around 9mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 9.9 hours of sunshine per day.

September temperatures in Pismo Beach

Pismo Beach average temperature in September

September rainfall

Pismo Beach average rain in September

September hourly sunshine

Pismo Beach 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 Pismo Beach 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

Pismo Beach weather stats

Pismo Beach weather statistics
Hottest month: August 24.5°C 76.1°F
Driest month: July 1mm 0ins
Sunniest month: April 11hrs
Coldest month: January 17.1°C 62.8°F
Wettest month: February 88mm 3.5ins
Map showing location of Pismo Beach (35.14275, -120.64128) Pismo Beach map pin © Google

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