Weather in Saint-Étienne for September 2026
Until now, September 2026 in Saint-Étienne has been nearly identical to the historical average, with a temperature of 26.5 °C (showing only a slight deviation of 0.4 °C).
Expect cooler weather in the next days in Saint-Étienne with the forecast suggesting a temperature of 22.2 °C, lower than the historical average.
In general, the average temperature in Saint-Étienne at the beginning of September is 27.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.7 °C by the end of September.
Saint-Étienne experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 116.7 mm.
Is September a good time to visit Saint-Étienne? check out the best time to travel to Saint-Étienne page.
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Saint-Étienne Weather September
Temperatures trend during September in Saint-Étienne
September weather in Saint-Étienne day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 26° /11° | 10.1 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 26° /11° | 0.4 mm | 6 | |
| 3 Sept. |  Sunny | 28° /12° | 3 mm | 7 | |
| 4 Sept. | Sunny | 27° /13° | 4.5 mm | 6 | |
| 5 Sept. | Sunny | 25° /13° | 11.8 mm | 6 | |
| 6 Sept. | Sunny | 28° /11° | 0 mm | 7 | |
| 7 Sept. | Sunny | 30° /13° | 6.9 mm | 7 | |
| 8 Sept. | Sunny | 28° /14° | 9.4 mm | 6 | |
| 9 Sept. | Light rain shower | 23° /11° | 4.9 mm | 4 | |
| 10 Sept. | Sunny | 24° /10° | 0 mm | 6 | |
| 11 Sept. | Patchy rain possible | 23° /10° | 0.3 mm | 6 | |
| 12 Sept. |  Heavy rain at times | 22° /9° | 5.7 mm | 5 | |
| 13 Sept. | Sunny | 24° /12° | 0 mm | 5.7 | |
| 14 Sept. | Sunny | 25° /14° | 0 mm | 6 | |
| 15 Sept. | Sunny | 27° /16° | 0 mm | 6 | |
| 16 Sept. | Sunny | 21° /13° | 0.3 mm | 5.4 | |
| 17 Sept. |  Overcast | 18° /8° | 0 mm | 5 | |
| 18 Sept. | Overcast | 18° /11° | 0 mm | 5 | |
| 19 Sept. | Sunny | 22° /11° | 0 mm | 6 | |
| 20 Sept. | Overcast | 21° /13° | 0 mm | 5 | |
| 21 Sept. | Sunny | 23° /13° | 0 mm | 6 | |
| 22 Sept. | Overcast | 20° /13° | 0 mm | 6 | |
| 23 Sept. | Sunny | 22° /11° | 0 mm | 6 | |
| 24 Sept. | Sunny | 26° /15° | 0 mm | 7 | |
| 25 Sept. | Sunny | 29° /15° | 0 mm | 7 | |
| 26 Sept. | Overcast | 15° /12° | 6.1 mm | 3 | |
| 27 Sept. | Overcast | 20° /7° | 0.3 mm | 5 | |
| 28 Sept. | Partly cloudy | 19° /5° | 0.7 mm | 5 | |
| 29 Sept. | Sunny | 22° /5° | 0 mm | 5 | |
| 30 Sept. | Sunny | 21° /7° | 1.7 mm | 5 | |
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Saint-Étienne weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/13° | 22°/9° | 17°/7° |
| Rainfall | 79 mm | 117 mm | 90 mm |
| Wind | 14.5 km/h | 12.8 km/h | 14.8 km/h |
| Humidity | 59% | 70% | 77% |
| Rainy days | 9 days | 10 days | 10 days |
| Dry days | 22 days | 20 days | 21 days |
Planning a trip to Saint-Étienne? Discover the best time to visit
Saint-Étienne in September - FAQ
What are the expected maximum and minimum temperatures in Saint-Étienne during September?
How much rainfall should be expected in Saint-Étienne during September?
What are the typical wind conditions in Saint-Étienne during September?
September rainfall patterns in Saint-Étienne
UV exposure in Saint-Étienne during September
What to pack to Saint-Étienne in September?
Mild & changeable · highs around 22 °C, frequent showers
As you prepare for your trip to Saint-Étienne 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 Saint-Étienne, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Saint-Étienne?Get accurate weather forecasts for Saint-Étienne, located at latitude 45.434 and longitude 4.39. Stay updated with localized weather information tailored for Saint-Étienne.