Chatham Weather in September

What's the weather like in Chatham (Virginia) in September 2025?

The climate in Chatham during September can be summarized as warm, humid and a little damp.

September is in the fall / autumn in Chatham and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 14°C (58°F) is normal.

Chatham weather averages (imperial / metric)
Daytime temperature 27.1°C 80.8°F
Nightly temperature 14.3°C 57.7°F
Average temperature 20.7°C 69.3°F
Daily sunshine 8 hrs
Avg rainfall 90 mm 3.5 ins
Rainy days 7 days
Sea temperature 24.7°C 76.5°F
Humidity 74%
Windspeed 10.4kph 7 mph

On average September is the 6th wettest month of the year in Chatham with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8 hours of sunshine per day.

September temperatures in Chatham

Chatham average temperature in September

September rainfall

Chatham average rain in September

September hourly sunshine

Chatham 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 Chatham 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

Chatham weather stats

Chatham weather statistics
Hottest month: July 30.9°C 87.6°F
Driest month: November 79mm 3.1ins
Sunniest month: June 9.9hrs
Coldest month: January 7.5°C 45.5°F
Wettest month: July 112mm 4.4ins
Map showing location of Chatham (36.82569, -79.39808) Chatham map pin © Google

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