Loire-Atlantique (Nantes)
September
Weather in Loire-Atlantique for September 2025
Your guide to Loire-Atlantique weather in September - trends and predictions
In general, the average temperature in Loire-Atlantique at the beginning of September is 26.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °C by the end of September.
Loire-Atlantique experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 74.5 mm.
Is September a good time to visit Loire-Atlantique? check out the best time to travel to Loire-Atlantique page.
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Temperatures
Rain 🌧️
More
7
Dry days
23
Rainy days
0
Snow days
23°/13°
Temperatures
20 km/h
Avg max wind
67 %
Avg humidity
Loire-Atlantique in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  25° | 3 27° | 4  28° | 5 28° | 6 28° | 7  27° |
| 8 25° | 9 25° | 10 24° | 11 25° | 12 25° | 13 26° | 14 26° |
| 15 25° | 16 23° | 17 24° | 18 23° | 19 23° | 20  22° | 21 21° |
| 22 22° | 23 21° | 24 22° | 25 20° | 26 21° | 27  20° | 28 19° |
| 29  18° | 30 20° |
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Temperatures trend during September in Loire-Atlantique
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 | 24° /15° | 6 mm | 6 | |
| 2 Sept. | Sunny | 25° /14° | 1.6 mm | 6 | |
| 3 Sept. | Patchy rain possible | 27° /15° | 1 mm | 6 | |
| 4 Sept. | Moderate or heavy rain shower | 28° /15° | 1.4 mm | 7 | |
| 5 Sept. | Patchy rain possible | 28° /15° | 0.1 mm | 6 | |
| 6 Sept. | Patchy rain possible | 28° /16° | 1.3 mm | 6 | |
| 7 Sept. | Partly cloudy | 27° /16° | 4.7 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 25° /16° | 8.5 mm | 6 | |
| 9 Sept. | Patchy rain possible | 25° /15° | 1.6 mm | 6 | |
| 10 Sept. | Patchy rain possible | 24° /14° | 0.5 mm | 5 | |
| 11 Sept. | Partly cloudy | 25° /13° | 1.6 mm | 6 | |
| 12 Sept. | Partly cloudy | 25° /13° | 0.1 mm | 6 | |
| 13 Sept. | Sunny | 26° /13° | 0.7 mm | 6 | |
| 14 Sept. | Moderate or heavy rain shower | 26° /13° | 1.8 mm | 6 | |
| 15 Sept. | Patchy rain possible | 25° /13° | 0.1 mm | 6 | |
| 16 Sept. | Patchy rain possible | 23° /12° | 0.5 mm | 5 | |
| 17 Sept. | Partly cloudy | 24° /12° | 2.2 mm | 6 | |
| 18 Sept. | Partly cloudy | 23° /12° | 1 mm | 6 | |
| 19 Sept. | Patchy rain possible | 23° /12° | 1.3 mm | 6 | |
| 20 Sept. | Overcast | 22° /11° | 2.7 mm | 5 | |
| 21 Sept. | Light rain shower | 21° /11° | 13.5 mm | 5 | |
| 22 Sept. | Sunny | 22° /10° | 1.8 mm | 5 | |
| 23 Sept. | Sunny | 21° /10° | 1.4 mm | 5 | |
| 24 Sept. | Sunny | 22° /10° | 1 mm | 6 | |
| 25 Sept. | Light rain shower | 20° /12° | 9.8 mm | 5 | |
| 26 Sept. | Patchy rain possible | 21° /12° | 2.1 mm | 5 | |
| 27 Sept. | Heavy rain at times | 20° /11° | 2.6 mm | 5 | |
| 28 Sept. | Patchy rain possible | 19° /10° | 0.8 mm | 5 | |
| 29 Sept. | Cloudy | 18° /9° | 1.5 mm | 4 | |
| 30 Sept. | Sunny | 20° /9° | 1.1 mm | 5 | |
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Important Notice
Our weather forecast for Loire-Atlantique 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 Loire-Atlantique forecast closer to your planned date for the most up-to-date weather information.
Loire-Atlantique in September - FAQ
What are the expected maximum and minimum temperatures in Loire-Atlantique during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Loire-Atlantique during September?
Moderate rainfall is anticipated in Loire-Atlantique during September, with a total of 74.5 mm spread over approximately 23 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Loire-Atlantique during September?
The average wind speed in Loire-Atlantique during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Loire-Atlantique in September?
As you prepare for your trip to Loire-Atlantique 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 Loire-Atlantique, 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 Loire-Atlantique
Explore the daily rainfall trends and prepare for Loire-Atlantiques September weather 💧
UV exposure in Loire-Atlantique during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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