Click on a day for an hourly weather forecast
The weather in New Braunfels in September is hot. The average temperatures are between 22°C and 32°C.
You can expect rain for roughly half of the month of September in New Braunfels. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in New Braunfels in September 2025.
If you’re planning to visit New Braunfels in the near future, we highly recommend that you review the 14 day weather forecast for New Braunfels before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 7° | 3 | 28 | 0 | 54 mm | Good | New Braunfels in January |
| February | 18° / 8° | 3 | 25 | 0 | 46 mm | Good | New Braunfels in February |
| March | 22° / 12° | 4 | 27 | 0 | 70 mm | Good | New Braunfels in March |
| April | 26° / 15° | 6 | 24 | 0 | 91 mm | Perfect | New Braunfels in April |
| May | 30° / 19° | 8 | 23 | 0 | 163 mm | Ok | New Braunfels in May |
| June | 33° / 22° | 6 | 24 | 0 | 107 mm | Good | New Braunfels in June |
| July | 35° / 23° | 4 | 27 | 0 | 80 mm | Ok | New Braunfels in July |
| August | 36° / 24° | 3 | 28 | 0 | 86 mm | Ok | New Braunfels in August |
| September | 32° / 22° | 8 | 22 | 0 | 170 mm | Ok | New Braunfels in September |
| October | 27° / 17° | 4 | 27 | 0 | 88 mm | Perfect | New Braunfels in October |
| November | 21° / 12° | 3 | 27 | 0 | 58 mm | Good | New Braunfels in November |
| December | 17° / 9° | 4 | 27 | 0 | 68 mm | Good | New Braunfels in December |