Weather in Rouen for September 2026
- In general, the average temperature in Rouen at the beginning of September is 25 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.6 °C by the end of September. 
- Rouen experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 78.8 mm. 
- Is September a good time to visit Rouen? check out the best time to travel to Rouen page. 
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Rouen Weather September
Temperatures trend during September in Rouen
September weather in Rouen day by day
| Date | Weather | Temperatures | Rain | UV | More | 
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 25° /14° | 6.9 mm | 6 | |
| 2 Sept. | Light rain shower | 23° /13° | 4 mm | 5 | |
| 3 Sept. | Patchy rain possible | 25° /13° | 0.6 mm | 6 | |
| 4 Sept. | Moderate rain at times | 24° /12° | 1.2 mm | 6 | |
| 5 Sept. | Patchy rain possible | 24° /14° | 3 mm | 5 | |
| 6 Sept. | Partly cloudy | 27° /14° | 0.9 mm | 6 | |
| 7 Sept. | Sunny | 27° /14° | 3.4 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 24° /14° | 6.1 mm | 6 | |
| 9 Sept. | Partly cloudy | 23° /13° | 1.4 mm | 5 | |
| 10 Sept. | Patchy rain possible | 22° /13° | 1.9 mm | 5 | |
| 11 Sept. | Light rain shower | 20° /11° | 1.5 mm | 5 | |
| 12 Sept. | Sunny | 21° /10° | 1.1 mm | 5 | |
| 13 Sept. | Light rain shower | 21° /12° | 4.2 mm | 5 | |
| 14 Sept. | Moderate or heavy rain shower | 22° /12° | 4.1 mm | 5 | |
| 15 Sept. | Patchy rain possible | 22° /11° | 0.5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 21° /11° | 0.8 mm | 5 | |
| 17 Sept. | Overcast | 22° /11° | 0.3 mm | 5 | |
| 18 Sept. | Overcast | 22° /12° | 1.4 mm | 5 | |
| 19 Sept. | Overcast | 23° /11° | 2 mm | 6 | |
| 20 Sept. | Patchy rain possible | 22° /11° | 2.4 mm | 5 | |
| 21 Sept. | Light rain shower | 19° /10° | 3.7 mm | 4 | |
| 22 Sept. | Sunny | 19° /9° | 2.6 mm | 5 | |
| 23 Sept. | Sunny | 19° /9° | 1.1 mm | 5 | |
| 24 Sept. | Cloudy | 19° /10° | 2.9 mm | 5 | |
| 25 Sept. | Patchy rain possible | 17° /10° | 3.7 mm | 4 | |
| 26 Sept. | Light rain shower | 18° /11° | 3.2 mm | 4 | |
| 27 Sept. | Moderate or heavy rain shower | 17° /9° | 2.2 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /8° | 0.6 mm | 4 | |
| 29 Sept. | Moderate rain at times | 17° /8° | 1.3 mm | 4 | |
| 30 Sept. | Sunny | 18° /8° | 1 mm | 5 | |
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Rouen weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible | 
| Temperatures | 24°/13° | 21°/12° | 17°/10° | 
| Rainfall | 61 mm | 79 mm | 100 mm | 
| Wind | 19.1 km/h | 18.6 km/h | 20.2 km/h | 
| Humidity | 70% | 72% | 78% | 
| Rainy days | 20 days | 25 days | 23 days | 
| Dry days | 11 days | 5 days | 8 days | 
Planning a trip to Rouen? Discover the best time to visit
Rouen in September - FAQ
What to pack to Rouen in September?
As you prepare for your trip to Rouen 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 Rouen, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
 
- Footwear- Waterproof Shoes
 
- Accessories- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
 
September rainfall patterns in Rouen
UV exposure in Rouen during September
Quick links
Get accurate weather forecasts for Rouen, located at latitude 49.443 and longitude 1.099. Stay updated with localized weather information tailored for Rouen.