Click on a day for an hourly weather forecast
The temperatures in La Grande Motte in September are comfortable with low of 11°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in La Grande Motte during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in La Grande Motte in September 2026.
If you’re planning to visit La Grande Motte in the near future, we highly recommend that you review the 14 day weather forecast for La Grande Motte before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 1° | 9 | 18 | 4 | 77 mm | Awful | La Grande Motte in January |
| February | 7° / 2° | 7 | 17 | 4 | 71 mm | Awful | La Grande Motte in February |
| March | 11° / 3° | 6 | 24 | 1 | 66 mm | Ok | La Grande Motte in March |
| April | 14° / 5° | 5 | 24 | 1 | 66 mm | Good | La Grande Motte in April |
| May | 17° / 7° | 6 | 25 | 0 | 101 mm | Good | La Grande Motte in May |
| June | 20° / 11° | 7 | 23 | 0 | 119 mm | Ok | La Grande Motte in June |
| July | 23° / 13° | 5 | 26 | 0 | 84 mm | Perfect | La Grande Motte in July |
| August | 23° / 14° | 4 | 27 | 0 | 69 mm | Perfect | La Grande Motte in August |
| September | 21° / 11° | 4 | 26 | 0 | 55 mm | Good | La Grande Motte in September |
| October | 16° / 9° | 5 | 26 | 0 | 66 mm | Good | La Grande Motte in October |
| November | 10° / 6° | 7 | 22 | 1 | 79 mm | Bad | La Grande Motte in November |
| December | 7° / 3° | 9 | 19 | 3 | 92 mm | Awful | La Grande Motte in December |