Montecito Weather in September

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

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

September is in the fall / autumn in Montecito and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 26°C (78°F), whilst at night 11°C (52°F) is normal.

Montecito weather averages (imperial / metric)
Daytime temperature 25.6°C 78°F
Nightly temperature 11.3°C 52.3°F
Average temperature 18.4°C 65.1°F
Daily sunshine 9.8 hrs
Avg rainfall 8 mm 0.3 ins
Rainy days 2 days
Sea temperature 17.5°C 63.6°F
Humidity 72%
Windspeed 11.2kph 7 mph

On average September is the 4th driest month of the year in Montecito with around 8mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 9.8 hours of sunshine per day.

September temperatures in Montecito

Montecito average temperature in September

September rainfall

Montecito average rain in September

September hourly sunshine

Montecito 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 Montecito 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

Montecito weather stats

Montecito weather statistics
Hottest month: August 26.3°C 79.3°F
Driest month: June 4mm 0.2ins
Sunniest month: April 10.6hrs
Coldest month: January 16.2°C 61.2°F
Wettest month: January 102mm 4ins
Map showing location of Montecito (34.43666, -119.63208) Montecito map pin © Google

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