Gainesville Weather in September

What's the weather like in Gainesville (Texas) in September 2025?

The climate in Gainesville during September can be summarized as hot and damp.

September is in the fall / autumn in Gainesville and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 30°C (87°F), whilst at night 18°C (65°F) is normal.

Gainesville weather averages (imperial / metric)
Daytime temperature 30.4°C 86.6°F
Nightly temperature 18.1°C 64.5°F
Average temperature 24.2°C 75.6°F
Daily sunshine 8.9 hrs
Avg rainfall 113 mm 4.5 ins
Rainy days 7 days
Sea temperature 24°C 75.3°F
Humidity 68%
Windspeed 15.8kph 10 mph

On average September is the 2nd wettest month of the year in Gainesville with around 113mm 4.5 inches of rain making it a 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 8.9 hours of sunshine per day.

September temperatures in Gainesville

Gainesville average temperature in September

September rainfall

Gainesville average rain in September

September hourly sunshine

Gainesville 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 Gainesville 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

Gainesville weather stats

Gainesville weather statistics
Hottest month: July 34.7°C 94.5°F
Driest month: January 46mm 1.8ins
Sunniest month: July 11.7hrs
Coldest month: January 11.2°C 52.2°F
Wettest month: May 127mm 5ins
Map showing location of Gainesville (33.62594, -97.13335) Gainesville map pin © Google

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