New Braunfels Weather in September

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

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

September is in the fall / autumn in New Braunfels and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 32°C (89°F), whilst at night 20°C (67°F) is normal.

New Braunfels weather averages (imperial / metric)
Daytime temperature 31.9°C 89.4°F
Nightly temperature 19.5°C 67.1°F
Average temperature 25.7°C 78.3°F
Daily sunshine 8.3 hrs
Avg rainfall 101 mm 4 ins
Rainy days 8 days
Sea temperature 28.8°C 83.8°F
Humidity 69%
Windspeed 14.8kph 9 mph

On average September is the 2nd wettest month of the year in New Braunfels with around 101mm 4 inches of rain making it a 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 8.3 hours of sunshine per day.

September temperatures in New Braunfels

New Braunfels average temperature in September

September rainfall

New Braunfels average rain in September

September hourly sunshine

New Braunfels 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 New Braunfels 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

New Braunfels weather stats

New Braunfels weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: March 46mm 1.8ins
Sunniest month: July 10.7hrs
Coldest month: January 15.2°C 59.4°F
Wettest month: May 123mm 4.8ins
Map showing location of New Braunfels (29.703, -98.12445) New Braunfels map pin © Google

Locations nearby

Top United States locations