Weather in La Rochelle for September 2026
Until now, September 2026 in La Rochelle has been significantly cooler than historical averages by 2 °C, with average temperature of 20.8 °C.
The forecast for the next days in La Rochelle predicts temperatures to be around 23 °C, close to the historical average.
In general, the average temperature in La Rochelle at the beginning of September is 23.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.4 °C by the end of September.
La Rochelle experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 73.4 mm.
Is September a good time to visit La Rochelle? check out the best time to travel to La Rochelle page.
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La Rochelle Weather September
Temperatures trend during September in La Rochelle
September weather in La Rochelle day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 22° /17° | 3 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 22° /16° | 4.5 mm | 5 | |
| 3 Sept. | Patchy rain possible | 23° /18° | 0.7 mm | 6 | |
| 4 Sept. | Sunny | 24° /17° | 1 mm | 6 | |
| 5 Sept. | Sunny | 24° /16° | 0.3 mm | 6 | |
| 6 Sept. | Sunny | 26° /18° | 0.4 mm | 6 | |
| 7 Sept. |  Partly cloudy | 24° /18° | 3.6 mm | 5 | |
| 8 Sept. |  Moderate rain at times | 22° /18° | 2.3 mm | 5 | |
| 9 Sept. | Patchy rain possible | 21° /16° | 0.7 mm | 5 | |
| 10 Sept. | Patchy rain possible | 21° /16° | 1.8 mm | 5 | |
| 11 Sept. | Light rain shower | 22° /15° | 4.6 mm | 5 | |
| 12 Sept. | Partly cloudy | 22° /16° | 0.6 mm | 5 | |
| 13 Sept. |  Overcast | 22° /18° | 0 mm | 5.2 | |
| 14 Sept. | Sunny | 24° /19° | 0 mm | 5.8 | |
| 15 Sept. | Sunny | 23° /20° | 0 mm | 5.5 | |
| 16 Sept. | Sunny | 20° /14° | 0 mm | 4.7 | |
| 17 Sept. | Overcast | 19° /14° | 0.1 mm | 5 | |
| 18 Sept. | Overcast | 18° /13° | 0 mm | 4 | |
| 19 Sept. | Sunny | 19° /14° | 0 mm | 5 | |
| 20 Sept. | Sunny | 21° /16° | 0 mm | 6 | |
| 21 Sept. | Sunny | 24° /18° | 0 mm | 6 | |
| 22 Sept. | Sunny | 25° /19° | 0 mm | 7 | |
| 23 Sept. | Sunny | 27° /19° | 0 mm | 7 | |
| 24 Sept. | Sunny | 26° /19° | 0 mm | 7 | |
| 25 Sept. | Sunny | 26° /20° | 0 mm | 7 | |
| 26 Sept. | Sunny | 22° /19° | 0 mm | 6 | |
| 27 Sept. | Moderate rain at times | 19° /14° | 1.9 mm | 4 | |
| 28 Sept. | Patchy rain possible | 19° /13° | 0.9 mm | 5 | |
| 29 Sept. | Patchy rain possible | 19° /13° | 3 mm | 5 | |
| 30 Sept. | Sunny | 19° /12° | 0.6 mm | 5 | |
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La Rochelle weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 24°/17° | 21°/16° | 19°/13° |
| Rainfall | 32 mm | 73 mm | 100 mm |
| Wind | 24 km/h | 23.9 km/h | 28.4 km/h |
| Humidity | 68% | 70% | 71% |
| Rainy days | 13 days | 21 days | 27 days |
| Dry days | 18 days | 9 days | 4 days |
Planning a trip to La Rochelle? Discover the best time to visit
La Rochelle in September - FAQ
What are the expected maximum and minimum temperatures in La Rochelle during September?
How much rainfall should be expected in La Rochelle during September?
What are the typical wind conditions in La Rochelle during September?
September rainfall patterns in La Rochelle
UV exposure in La Rochelle during September
What to pack to La Rochelle in September?
Mild · highs around 21 °C, frequent showers
As you prepare for your trip to La Rochelle in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in La Rochelle, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is La Rochelle?Get accurate weather forecasts for La Rochelle, located at latitude 46.163 and longitude -1.152. Stay updated with localized weather information tailored for La Rochelle.