Georgetown Weather in September

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

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

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 26°C (79°F), whilst at night 14°C (58°F) is normal.

Georgetown weather averages (imperial / metric)
Daytime temperature 26°C 78.8°F
Nightly temperature 14.2°C 57.6°F
Average temperature 20.1°C 68.2°F
Daily sunshine 8.2 hrs
Avg rainfall 93 mm 3.6 ins
Rainy days 8 days
Sea temperature 22°C 71.6°F
Humidity 76%
Windspeed 13.3kph 8 mph

On average September is the 5th wettest month of the year in Georgetown with around 93mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.2 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 29.9°C 85.8°F
Driest month: February 80mm 3.1ins
Sunniest month: April 9hrs
Coldest month: January 5.7°C 42.3°F
Wettest month: August 119mm 4.7ins
Map showing location of Georgetown (38.69011, -75.38547) Georgetown map pin © Google

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