Nantes
September
Weather in Nantes for September 2025
Your guide to Nantes weather in September - trends and predictions
In general, the average temperature in Nantes at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.
Nantes sees moderate rainfall in September, averaging 10 rainy days.
Is September a good time to visit Nantes? check out the best time to travel to Nantes page.
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20
Dry days
10
Rainy days
0
Snow days
26°/15°
Temperatures
20 km/h
Avg max wind
66 %
Avg humidity
Nantes in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2  23° | 3  28° | 4 28° | 5 25° | 6 27° | 7 26° |
| 8  26° | 9 28° | 10 25° | 11 23° | 12 21° | 13 22° | 14 23° |
| 15 26° | 16 23° | 17 26° | 18 24° | 19 23° | 20 23° | 21 19° |
| 22 20° | 23  18° | 24 21° | 25 20° | 26 22° | 27  20° | 28 20° |
| 29 18° | 30 21° |
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Temperatures trend during September in Nantes
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 22° /14° | 8.2 mm | 5 | |
| 2 Sept. | Mist | 23° /14° | 0.5 mm | 5 | |
| 3 Sept. | Sunny | 28° /15° | 0.2 mm | 7 | |
| 4 Sept. | Sunny | 28° /15° | 0.1 mm | 7 | |
| 5 Sept. | Patchy rain possible | 25° /15° | 0.1 mm | 6 | |
| 6 Sept. | Patchy rain possible | 27° /15° | 0.4 mm | 6 | |
| 7 Sept. | Sunny | 26° /16° | 6.1 mm | 6 | |
| 8 Sept. | Partly cloudy | 26° /17° | 4.4 mm | 6 | |
| 9 Sept. | Partly cloudy | 28° /15° | 0.2 mm | 7 | |
| 10 Sept. | Patchy rain possible | 25° /14° | 0.2 mm | 6 | |
| 11 Sept. | Light rain shower | 23° /13° | 3.2 mm | 5 | |
| 12 Sept. | Mist | 21° /11° | 0.2 mm | 5 | |
| 13 Sept. | Mist | 22° /10° | 0 mm | 6 | |
| 14 Sept. | Mist | 23° /9° | 0 mm | 6 | |
| 15 Sept. | Partly cloudy | 26° /11° | 0 mm | 7 | |
| 16 Sept. | Light rain shower | 23° /13° | 1 mm | 5 | |
| 17 Sept. | Light rain shower | 26° /14° | 4.4 mm | 6 | |
| 18 Sept. | Partly cloudy | 24° /14° | 0 mm | 6 | |
| 19 Sept. | Patchy rain possible | 23° /14° | 0.1 mm | 6 | |
| 20 Sept. | Patchy rain possible | 23° /14° | 5.2 mm | 5 | |
| 21 Sept. | Light rain shower | 19° /13° | 27.1 mm | 4 | |
| 22 Sept. | Patchy rain possible | 20° /11° | 3.6 mm | 5 | |
| 23 Sept. | Cloudy | 18° /10° | 1.1 mm | 4 | |
| 24 Sept. | Sunny | 21° /11° | 0.1 mm | 6 | |
| 25 Sept. | Light rain shower | 20° /13° | 12.4 mm | 5 | |
| 26 Sept. | Patchy rain possible | 22° /14° | 2.4 mm | 5 | |
| 27 Sept. | Overcast | 20° /11° | 3.3 mm | 5 | |
| 28 Sept. | Partly cloudy | 20° /10° | 0 mm | 5 | |
| 29 Sept. | Patchy rain possible | 18° /11° | 1.4 mm | 4 | |
| 30 Sept. | Sunny | 21° /12° | 0.6 mm | 5 | |
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Important Notice
Our weather forecast for Nantes 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 Nantes forecast closer to your planned date for the most up-to-date weather information.
Nantes in September - FAQ
What are the expected maximum and minimum temperatures in Nantes during September?
During September, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Nantes during September?
Moderate rainfall is anticipated in Nantes during September, with a total of 81.9 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Nantes during September?
The average wind speed in Nantes during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Nantes in September?
As you prepare for your trip to Nantes 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 Nantes, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Nantes
Explore the daily rainfall trends and prepare for Nantess September weather 💧
UV exposure in Nantes during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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