Grenville Weather in September

What's the weather like in Grenville (Saint Andrew) in September 2024?

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

September is in the fall / autumn in Grenville and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 23°C (73°F) is normal.

Grenville weather averages (imperial / metric)
Daytime temperature 30.5°C 86.8°F
Nightly temperature 23°C 73.3°F
Average temperature 26.7°C 80.1°F
Daily sunshine 7.7 hrs
Avg rainfall 186 mm 7.3 ins
Rainy days 18 days
Sea temperature 29.1°C 84.3°F
Humidity 83%
Windspeed 9.4kph 6 mph

On average September is the 4th wettest month of the year in Grenville with around 186mm 7.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.7 hours of sunshine per day.

September temperatures in Grenville

Grenville average temperature in September

September rainfall

Grenville average rain in September

September hourly sunshine

Grenville 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 Grenville in September 2024.

Other monthly averages

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UV index Best time to go?

Grenville weather stats

Grenville weather statistics
Hottest month: May 30.1°C 86.2°F
Driest month: February 57mm 2.2ins
Sunniest month: February 8.9hrs
Coldest month: January 28.4°C 83.1°F
Wettest month: October 207mm 8.1ins
Map showing location of Grenville (12.11667, -61.61667) Grenville map pin © Google

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