Negombo Weather in September

What's the weather like in Negombo (Western) in September 2023?

The climate in Negombo during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Negombo and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 25°C (76°F) is normal.

Negombo weather averages (imperial / metric)
Daytime temperature 31°C 87.7°F
Nightly temperature 24.7°C 76.4°F
Average temperature 27.8°C 82°F
Daily sunshine 6.6 hrs
Avg rainfall 187 mm 7.4 ins
Rainy days 12 days
Sea temperature 27.4°C 81.3°F
Humidity 78%
Windspeed 11.2kph 7 mph

On average September is the 5th wettest month of the year in Negombo with around 187mm 7.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.6 hours of sunshine per day.

September temperatures in Negombo

Negombo average temperature in September

September rainfall

Negombo average rain in September

September hourly sunshine

Negombo 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 Negombo in September 2023.

Other monthly averages

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UV index Best time to go?

Negombo weather stats

Negombo weather statistics
Hottest month: April 32.4°C 90.3°F
Driest month: January 48mm 1.9ins
Sunniest month: March 9.2hrs
Coldest month: January 30.9°C 87.6°F
Wettest month: October 351mm 13.8ins
Map showing location of Negombo (7.2083, 79.8358)

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