Seine-Maritime (Rouen)
September
Weather in Seine-Maritime for September 2027
Your guide to Seine-Maritime weather in September - trends and predictions
In general, the average temperature in Seine-Maritime at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.
The climate of Seine-Maritime in September is notably wet, with an average of 11 rainy days, and a total of 68.9 mm of precipitation.
Is September a good time to visit Seine-Maritime? check out the best time to travel to Seine-Maritime page.
✨ Is September a good time to visit Seine-Maritime? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
19
Dry days
11
Rainy days
0
Snow days
21°/12°
Temperatures
19 km/h
Avg max wind
72 %
Avg humidity
Seine-Maritime Weather September
Move between months or click on a day
Temperatures trend during September in Seine-Maritime
See the weather trend as well as the moving average line
September weather in Seine-Maritime day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 24° /14° | 5.8 mm | 5 | |
| 2 Sept. | Light rain | 23° /13° | 3.4 mm | 5 | |
| 3 Sept. |  Patchy rain possible | 24° /14° | 0.5 mm | 5 | |
| 4 Sept. | Patchy rain possible | 24° /13° | 1.1 mm | 5 | |
| 5 Sept. | Light rain | 23° /14° | 2.5 mm | 5 | |
| 6 Sept. |  Overcast | 26° /14° | 0.7 mm | 5.7 | |
| 7 Sept. | Light rain | 26° /15° | 2.9 mm | 5.6 | |
| 8 Sept. | Light rain | 23° /14° | 5.6 mm | 5 | |
| 9 Sept. | Patchy rain possible | 22° /13° | 1.2 mm | 5 | |
| 10 Sept. | Patchy rain possible | 22° /13° | 1.6 mm | 5 | |
| 11 Sept. | Light rain shower | 20° /11° | 1.6 mm | 5 | |
| 12 Sept. | Overcast | 21° /11° | 0.9 mm | 5 | |
| 13 Sept. | Light rain | 21° /12° | 4.2 mm | 5 | |
| 14 Sept. | Light rain | 22° /13° | 3.4 mm | 5 | |
| 15 Sept. | Patchy rain possible | 22° /12° | 0.4 mm | 4.9 | |
| 16 Sept. | Patchy rain possible | 20° /11° | 0.8 mm | 4.8 | |
| 17 Sept. | Overcast | 22° /12° | 0.6 mm | 4.7 | |
| 18 Sept. | Patchy rain possible | 22° /12° | 1.3 mm | 4.6 | |
| 19 Sept. | Patchy rain possible | 22° /12° | 1.6 mm | 4.5 | |
| 20 Sept. | Light rain | 21° /12° | 2.6 mm | 4 | |
| 21 Sept. | Light rain | 19° /10° | 3.1 mm | 4 | |
| 22 Sept. | Patchy rain possible | 19° /10° | 2.2 mm | 4.3 | |
| 23 Sept. |  Sunny | 20° /10° | 0.9 mm | 4.2 | |
| 24 Sept. | Patchy rain possible | 19° /11° | 2.4 mm | 4 | |
| 25 Sept. | Light rain | 19° /10° | 3.1 mm | 4 | |
| 26 Sept. | Light rain | 18° /12° | 2.9 mm | 3.9 | |
| 27 Sept. | Patchy rain possible | 18° /10° | 1.9 mm | 3.9 | |
| 28 Sept. | Patchy rain possible | 17° /10° | 2.3 mm | 3 | |
| 29 Sept. | Patchy rain possible | 19° /9° | 1.5 mm | 3.7 | |
| 30 Sept. | Light rain | 18° /10° | 5.9 mm | 3.6 | |
| Next | |||||
Important Notice
Our weather forecast for Seine-Maritime in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Seine-Maritime forecast closer to your planned date for the most up-to-date weather information.
Change Month
Seine-Maritime weather in September vs August vs October
Compare September weather in Seine-Maritime with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 25°/13° | 21°/12° | 17°/9° |
| Rainfall | 57 mm | 69 mm | 87 mm |
| Wind | 19.8 km/h | 19.3 km/h | 20.9 km/h |
| Humidity | 67% | 72% | 77% |
| Rainy days | 9 days | 11 days | 13 days |
| Dry days | 22 days | 19 days | 18 days |
Planning a trip to Seine-Maritime? Discover the best time to visit
Seine-Maritime in September - FAQ
What are the expected maximum and minimum temperatures in Seine-Maritime during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Seine-Maritime during September?
Moderate rainfall is anticipated in Seine-Maritime during September, with a total of 68.9 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Seine-Maritime during September?
The average wind speed in Seine-Maritime during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Seine-Maritime
Explore the daily rainfall trends and prepare for Seine-Maritimes September weather 💧
Typically, Seine-Maritime has 11 rainy days in September with a total of 68.9 mm of rainfall.
UV exposure in Seine-Maritime during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
What to pack to Seine-Maritime in September?
Mild & changeable · highs around 21 °C, frequent showers
As you prepare for your trip to Seine-Maritime 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 Seine-Maritime, during September, is comfortable and enjoyable, regardless of the weather conditions.
0%0 / 6
🧥 Clothing
👟 Footwear
🎒 Accessories
Top locations in Seine-Maritime
Select a location for an accurate weather forecast
More Locations Quick links
More Seine-Maritime weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.