Click on a day for an hourly weather forecast
The temperatures in Saint Jean de Monts in May are usually low and can range between 11°C and 17°C.
You can expect about 3 to 8 days of rain in Saint Jean de Monts during the month of May. 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 Saint Jean de Monts in May 2026.
If you’re planning to visit Saint Jean de Monts in the near future, we highly recommend that you review the 14 day weather forecast for Saint Jean de Monts before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 6° | 9 | 22 | 1 | 137 mm | Bad | Saint Jean de Monts in January |
| February | 10° / 6° | 7 | 20 | 1 | 108 mm | Bad | Saint Jean de Monts in February |
| March | 12° / 7° | 6 | 25 | 0 | 82 mm | Ok | Saint Jean de Monts in March |
| April | 14° / 9° | 4 | 26 | 0 | 66 mm | Good | Saint Jean de Monts in April |
| May | 17° / 11° | 5 | 26 | 0 | 82 mm | Good | Saint Jean de Monts in May |
| June | 20° / 15° | 5 | 25 | 0 | 85 mm | Good | Saint Jean de Monts in June |
| July | 22° / 17° | 4 | 27 | 0 | 67 mm | Good | Saint Jean de Monts in July |
| August | 22° / 17° | 3 | 28 | 0 | 69 mm | Good | Saint Jean de Monts in August |
| September | 21° / 15° | 4 | 26 | 0 | 64 mm | Good | Saint Jean de Monts in September |
| October | 17° / 13° | 6 | 25 | 0 | 110 mm | Good | Saint Jean de Monts in October |
| November | 13° / 10° | 8 | 22 | 0 | 155 mm | Bad | Saint Jean de Monts in November |
| December | 11° / 8° | 9 | 21 | 0 | 150 mm | Bad | Saint Jean de Monts in December |