La Rochelle Weather: September
 |
Average Day Temperature: | 72.9°F |
|
Average Night Temperature: | 63.1°F |
|
Sea Water Temperature: | 69.0°F |
|
Number of Sunny Days: | 16 days |
| Sunshine Hours: | 11.8 - 13.3 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.4 in | |
| detailed information | ||
forecast
| La Rochelle |
Temperature
| La Rochelle |
Air Temperature in September, °F
The highest day temperature in September 2025 was 81°F. The lowest night temperature was 53°F. The average values for day and night temperatures during September were 68.8°F и 62.3°F respectivly.
La Rochelle Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for La Rochelle was 69.2°F. The maximum and minimum values were 66.6°F and 71.4°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for La Rochelle is 1.4 in. It makes september one of the least rainy months of the year.
The average wind speed in September is 10.7 mph. It makes September one of the most windless months of the year for La Rochelle.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for La Rochelle in September is 8.6 hours.
La Rochelle on the Weather Map
| Antibes |  |
+50 |
| Arcachon | |
+50 |
| Biarritz |  |
+46 |
| Bordeaux | |
+44 |
| Cannes |  |
+46 |
| Corsica | |
+52 |
| Etretat | |
+42 |
| Marseilles | |
+46 |
| Menton | |
+52 |
| Montpellier |  |
+46 |
| Nice |  |
+46 |
| Paris | |
+36 |
| Saint-Tropez | |
+44 |
| Toulon | |
+48 |
| Toulouse | |
+42 |
| 1200 |  |
52°F | N 16 mph |
| 1500 |  |
52°F | N 22 mph |
| 1800 | |
54°F | N 25 mph |
| 2100 | |
58°F | NE 24 mph |
| 0000 | |
60°F | E 28 mph |
| 0300 | |
58°F | E 21 mph |
| 0600 | |
56°F | E 23 mph |
| 0900 | |
56°F | E 23 mph |