São Sebastião Weather in September

What's the weather like in São Sebastião (Alagoas) in September 2024?

The climate in São Sebastião during September can be summarized as hot, humid and reasonably dry.

September is in the spring in São Sebastião and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 20°C (67°F) is normal.

São Sebastião weather averages (imperial / metric)
Daytime temperature 27.9°C 82.2°F
Nightly temperature 19.5°C 67.1°F
Average temperature 23.7°C 74.7°F
Daily sunshine 7.4 hrs
Avg rainfall 65 mm 2.5 ins
Rainy days 20 days
Sea temperature 26.1°C 79°F
Humidity 79%
Windspeed 11.9kph 7 mph

On average September is the 6th driest month of the year in São Sebastião with around 65mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.4 hours of sunshine per day.

September temperatures in São Sebastião

São Sebastião average temperature in September

September rainfall

São Sebastião average rain in September

September hourly sunshine

São Sebastião 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 São Sebastião in September 2024.

Other monthly averages

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São Sebastião weather stats

São Sebastião weather statistics
Hottest month: January 31.5°C 88.7°F
Driest month: November 25mm 1ins
Sunniest month: November 9.5hrs
Coldest month: July 25.8°C 78.4°F
Wettest month: May 172mm 6.8ins
Map showing location of São Sebastião (-9.93361, -36.55417) São Sebastião map pin © Google

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