Galveston Weather in September

What's the weather like in Galveston (Texas) in September 2024?

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

September is in the fall / autumn in Galveston and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (85°F), whilst at night 24°C (74°F) is normal.

Galveston weather averages (imperial / metric)
Daytime temperature 29.7°C 85.4°F
Nightly temperature 23.5°C 74.2°F
Average temperature 26.6°C 79.8°F
Daily sunshine 8.4 hrs
Avg rainfall 137 mm 5.4 ins
Rainy days 10 days
Sea temperature 28.8°C 83.8°F
Humidity 78%
Windspeed 13kph 8 mph

On average September is the wettest month of the year in Galveston with around 137mm 5.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.4 hours of sunshine per day.

September temperatures in Galveston

Galveston average temperature in September

September rainfall

Galveston average rain in September

September hourly sunshine

Galveston 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 Galveston in September 2024.