Weather in Mont Saint-Michel for September 2025
In general, the average temperature in Mont Saint-Michel at the beginning of September is 18 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.6 °C by the end of September.
Mont Saint-Michel experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 102.2 mm.
Is September a good time to visit Mont Saint-Michel? check out the best time to travel to Mont Saint-Michel page.
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Mont Saint-Michel Weather September
Temperatures trend during September in Mont Saint-Michel
September weather in Mont Saint-Michel day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 19° /18° | 2.3 mm | 4 | |
| 2 Sept. |  Light rain | 19° /16° | 4.6 mm | 4 | |
| 3 Sept. | Light rain shower | 18° /16° | 2 mm | 4 | |
| 4 Sept. | Patchy rain possible | 18° /15° | 1.9 mm | 4 | |
| 5 Sept. | Light rain shower | 17° /14° | 6.3 mm | 4 | |
| 6 Sept. | Patchy rain possible | 18° /15° | 0 mm | 4 | |
| 7 Sept. | Light rain shower | 17° /15° | 9.8 mm | 4 | |
| 8 Sept. | Light rain shower | 17° /13° | 16.4 mm | 4 | |
| 9 Sept. | Patchy rain possible | 17° /16° | 1.7 mm | 4 | |
| 10 Sept. | Patchy rain possible | 18° /14° | 0.8 mm | 4 | |
| 11 Sept. | Patchy light drizzle | 16° /14° | 3.3 mm | 4 | |
| 12 Sept. | Light rain shower | 14° /13° | 6.7 mm | 3 | |
| 13 Sept. | Patchy rain possible | 15° /12° | 0.8 mm | 4 | |
| 14 Sept. |  Sunny | 15° /11° | 0 mm | 5 | |
| 15 Sept. | Sunny | 16° /12° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 18° /15° | 0.1 mm | 4 | |
| 17 Sept. | Patchy rain possible | 19° /14° | 0 mm | 4 | |
| 18 Sept. |  Partly cloudy | 21° /16° | 0 mm | 6 | |
| 19 Sept. | Partly cloudy | 21° /15° | 0 mm | 6 | |
| 20 Sept. |  Patchy light rain with thunder | 20° /15° | 0.5 mm | 5 | |
| 21 Sept. | Light rain shower | 18° /14° | 4.1 mm | 4 | |
| 22 Sept. | Light drizzle | 19° /14° | 2.6 mm | 4 | |
| 23 Sept. | Light rain shower | 17° /13° | 10.5 mm | 4 | |
| 24 Sept. | Light rain shower | 16° /15° | 4.1 mm | 4 | |
| 25 Sept. | Light rain shower | 16° /14° | 9.9 mm | 4 | |
| 26 Sept. | Light rain shower | 18° /13° | 3.6 mm | 4 | |
| 27 Sept. | Light rain shower | 14° /12° | 4.2 mm | 3 | |
| 28 Sept. | Light rain shower | 14° /12° | 3.5 mm | 3 | |
| 29 Sept. | Patchy rain possible | 15° /11° | 0.9 mm | 4 | |
| 30 Sept. | Patchy rain possible | 16° /14° | 1.6 mm | 4 | |
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Mont Saint-Michel in September - FAQ
What to pack to Mont Saint-Michel in September?
As you prepare for your trip to Mont Saint-Michel 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 Mont Saint-Michel, 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
- 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 Mont Saint-Michel
UV exposure in Mont Saint-Michel during September
Quick links
Where is Mont Saint-Michel?Get accurate weather forecasts for Mont Saint-Michel, located at latitude 48.636 and longitude -1.511. Stay updated with localized weather information tailored for Mont Saint-Michel.