Saint-Jean-de-Monts in september: average Weather, Temperature and Climate
Weather in Saint-Jean-de-Monts in september 2025
The weather in Saint-Jean-de-Monts in september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
perfect weather UV index: 6
Weather at 6am
61°F
Clear/Sunny
45% of time
23%
17%
11%
Weather at 12pm
70°F
Clear/Sunny
50% of time
23%
18%
7%
Weather at 6pm
67°F
Clear/Sunny
48% of time
29%
13%
8%
Weather at 3am
63°F
49%
23%
16%
10%
Evolution of daily average temperature and precipitation in Saint-Jean-de-Monts in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Saint-Jean-de-Monts in september.
The climate of Saint-Jean-de-Monts in september is perfect
the weather in Saint-Jean-de-Monts in september is rather dry (with 2.6in of rainfall over 4 days). The situation is deteriorating compared to the previous month since in august there is an average of 2.7in of precipitation over 4 days.
The climate good in this city this month. The thermometer averaged maximum of 70°F. In the morning the temperature drops to 61°F. Thus, the mean temperature average in september in Saint-Jean-de-Monts is 67°F. These temperatures are far removed from those records observed in Saint-Jean-de-Monts in september with a maximum record of 83°F in 2016 and a minimum record of 47°F in 2010.
Day length in Saint-Jean-de-Monts in september is 12:34. Sunrise is at 06:46 and sets at 19:20.
With good weather conditions, september is a good month to go in this city.
Seasonal average climate and temperature of Saint-Jean-de-Monts in september
Check below seasonal norms These statistics are compiled from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 67°F | ||||
| Highest temperature | 70°F | ||||
| Lowest temperature | 61°F | ||||
| Highest record temperature | 83°F (2016) | ||||
| Lowest record temperature | 47°F (2010) | ||||
| Number of days at +65°F | 28 day(s) (93%) | ||||
| Sea temperature | |||||
| Average sea temperature | 66°F | ||||
| Lowest sea temperature | 64°F | ||||
| Highest sea temperature | 69°F | ||||
| Wind | |||||
| Wind speed | 21km/h | ||||
| Wind temperature | 59°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.6in | ||||
| Number of days with rainfall | 4 day(s) (13%) | ||||
| Record daily rainfall | 1.7in (2019) | ||||
| Other climate data | |||||
| Humidity | 83% | ||||
| Visibility | 9.7km | ||||
| Cloud cover | 31% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:46 | ||||
| Time of sunset | 19:20 | ||||
| Length of day | 12:34 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last september?
Here is the day by day recorded weather in Saint-Jean-de-Monts in september 2024:
65°F to 68°F
65°F to 67°F
65°F to 70°F
58°F to 67°F
59°F to 63°F
59°F to 65°F
58°F to 65°F
63°F to 65°F
65°F to 67°F
56°F to 65°F
61°F to 63°F
52°F to 61°F
49°F to 65°F
52°F to 68°F
52°F to 70°F
54°F to 70°F
56°F to 74°F
59°F to 74°F
59°F to 70°F
61°F to 68°F
61°F to 65°F
63°F to 67°F
61°F to 65°F
59°F to 65°F
61°F to 63°F
63°F to 67°F
59°F to 61°F
50°F to 61°F
54°F to 61°F
61°F to 63°F
Map: other cities in Vendée in september
Cities near Saint-Jean-de-Monts:
| La Barre-de-Monts in september | perfect weather |
| Beauvoir-sur-Mer in september | good weather |
| Saint-Hilaire-de-Riez in september | perfect weather |
| Saint-Gilles-Croix-de-Vie in september | perfect weather |
| Challans in september | perfect weather |
| Bouin in september | perfect weather |
| Bretignolles-sur-Mer in september | perfect weather |
| Yeu Island (Île d'Yeu) in september | perfect weather |
| Noirmoutier Island in september | perfect weather |
| Aizenay in september | perfect weather |
| Les Sables-d'Olonne in september | perfect weather |
| Port Bourgenay in september | perfect weather |
Click over cities on the map for information about the weather in september.
Saint-Jean-de-Monts
perfect weather
good
tolerable
bad
very bad
Weather data for Saint-Jean-de-Monts in september:
Weather data for Saint-Jean-de-Monts for september are derived from an average of the weather forecast since 2009 in Saint-Jean-de-Monts. There is a margin of error and these forecasts are to be considered as general information only. The weather in Saint-Jean-de-Monts can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Saint-Jean-de-Monts.