Big Lake Weather in September

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

The climate in Big Lake during September can be summarized as hot and reasonably dry.

September is in the fall / autumn in Big Lake and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (86°F), whilst at night 18°C (64°F) is normal.

Big Lake weather averages (imperial / metric)
Daytime temperature 29.9°C 85.8°F
Nightly temperature 17.5°C 63.5°F
Average temperature 23.7°C 74.7°F
Daily sunshine 8.6 hrs
Avg rainfall 78 mm 3.1 ins
Rainy days 7 days
Sea temperature 27°C 80.6°F
Humidity 63%
Windspeed 16.2kph 10 mph

On average September is the wettest month of the year in Big Lake with around 78mm 3.1 inches of rain making it a reasonably dry 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 8.6 hours of sunshine per day.

September temperatures in Big Lake

Big Lake average temperature in September

September rainfall

Big Lake average rain in September

September hourly sunshine

Big Lake 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 Big Lake 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

Big Lake weather stats

Big Lake weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: January 16mm 0.6ins
Sunniest month: July 10.8hrs
Coldest month: January 13.6°C 56.5°F
Wettest month: September 78mm 3.1ins
Map showing location of Big Lake (31.19154, -101.46039) Big Lake map pin © Google

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