Georgetown Weather in September

What's the weather like in Georgetown (South Carolina) in September 2025?

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

September is in the fall / autumn in Georgetown and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (85°F), whilst at night 19°C (66°F) is normal.

Georgetown weather averages (imperial / metric)
Daytime temperature 29.2°C 84.6°F
Nightly temperature 18.6°C 65.5°F
Average temperature 23.9°C 75°F
Daily sunshine 8.1 hrs
Avg rainfall 128 mm 5 ins
Rainy days 9 days
Sea temperature 27.5°C 81.4°F
Humidity 78%
Windspeed 13kph 8 mph

On average September is the 4th wettest month of the year in Georgetown with around 128mm 5 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 hours of sunshine per day.

September temperatures in Georgetown

Georgetown average temperature in September

September rainfall

Georgetown average rain in September

September hourly sunshine

Georgetown 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 Georgetown 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

Georgetown weather stats

Georgetown weather statistics
Hottest month: July 32°C 89.6°F
Driest month: April 68mm 2.7ins
Sunniest month: April 9.8hrs
Coldest month: January 13.3°C 55.9°F
Wettest month: August 170mm 6.7ins
Map showing location of Georgetown (33.37683, -79.2945) Georgetown map pin © Google

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