Click on a day for an hourly weather forecast
The weather in New Orleans in September is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in New Orleans. 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 Orleans in September 2025.
If you’re planning to visit New Orleans in the near future, we highly recommend that you review the 14 day weather forecast for New Orleans before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 9° | 4 | 27 | 0 | 53 mm | Good | New Orleans in January |
| February | 19° / 12° | 4 | 24 | 0 | 60 mm | Good | New Orleans in February |
| March | 22° / 15° | 4 | 27 | 0 | 65 mm | Good | New Orleans in March |
| April | 25° / 18° | 4 | 26 | 0 | 56 mm | Perfect | New Orleans in April |
| May | 29° / 21° | 7 | 24 | 0 | 85 mm | Ok | New Orleans in May |
| June | 32° / 25° | 10 | 20 | 0 | 136 mm | Ok | New Orleans in June |
| July | 32° / 26° | 13 | 18 | 0 | 189 mm | Ok | New Orleans in July |
| August | 32° / 26° | 16 | 15 | 0 | 224 mm | Ok | New Orleans in August |
| September | 31° / 24° | 10 | 20 | 0 | 138 mm | Ok | New Orleans in September |
| October | 27° / 20° | 5 | 26 | 0 | 69 mm | Perfect | New Orleans in October |
| November | 21° / 14° | 3 | 27 | 0 | 45 mm | Good | New Orleans in November |
| December | 18° / 12° | 4 | 27 | 0 | 69 mm | Good | New Orleans in December |