Weather in Saint-Malo for September 2025
In general, the average temperature in Saint-Malo at the beginning of September is 23 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °C by the end of September.
The climate of Saint-Malo in September is notably wet, with an average of 12 rainy days, and a total of 320.3 mm of precipitation.
Is September a good time to visit Saint-Malo? check out the best time to travel to Saint-Malo page.
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Saint-Malo Weather September
Temperatures trend during September in Saint-Malo
September weather in Saint-Malo day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 22° /16° | 8.8 mm | 5 | |
| 2 Sept. |  Sunny | 22° /15° | 1.2 mm | 5 | |
| 3 Sept. | Sunny | 23° /15° | 0.5 mm | 6 | |
| 4 Sept. |  Partly cloudy | 24° /15° | 0.5 mm | 6 | |
| 5 Sept. | Partly cloudy | 23° /16° | 2.5 mm | 6 | |
| 6 Sept. |  Patchy rain possible | 23° /16° | 1.4 mm | 5 | |
| 7 Sept. | Sunny | 24° /16° | 4.1 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 21° /15° | 8.2 mm | 5 | |
| 9 Sept. | Patchy rain possible | 22° /16° | 2.7 mm | 5 | |
| 10 Sept. | Patchy rain possible | 22° /14° | 2.9 mm | 5 | |
| 11 Sept. | Partly cloudy | 21° /14° | 0.7 mm | 6 | |
| 12 Sept. | Sunny | 21° /14° | 1.5 mm | 5 | |
| 13 Sept. | Partly cloudy | 21° /15° | 4.9 mm | 5 | |
| 14 Sept. | Moderate or heavy rain shower | 21° /14° | 3.6 mm | 5 | |
| 15 Sept. | Moderate rain at times | 20° /13° | 0.4 mm | 5 | |
| 16 Sept. | Patchy rain possible | 20° /14° | 1.1 mm | 5 | |
| 17 Sept. |  Overcast | 21° /14° | 1.1 mm | 5 | |
| 18 Sept. | Partly cloudy | 20° /13° | 1 mm | 5 | |
| 19 Sept. | Patchy rain possible | 20° /14° | 0.2 mm | 5 | |
| 20 Sept. | Overcast | 19° /13° | 5.3 mm | 5 | |
| 21 Sept. | Partly cloudy | 19° /12° | 2.6 mm | 5 | |
| 22 Sept. | Sunny | 20° /12° | 1.3 mm | 5 | |
| 23 Sept. | Sunny | 18° /12° | 3.7 mm | 4 | |
| 24 Sept. |  Cloudy | 19° /13° | 1.6 mm | 5 | |
| 25 Sept. | Patchy rain possible | 18° /13° | 3.5 mm | 5 | |
| 26 Sept. | Moderate rain at times | 19° /13° | 2.6 mm | 5 | |
| 27 Sept. | Moderate or heavy rain shower | 18° /12° | 3.5 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /12° | 5.2 mm | 4 | |
| 29 Sept. | Patchy rain possible | 17° /11° | 2.2 mm | 4 | |
| 30 Sept. | Cloudy | 19° /11° | 1.2 mm | 5 | |
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Saint-Malo in September - FAQ
What to pack to Saint-Malo in September?
As you prepare for your trip to Saint-Malo 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 Saint-Malo, 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 Saint-Malo
UV exposure in Saint-Malo during September
Quick links
Where is Saint-Malo?Get accurate weather forecasts for Saint-Malo, located at latitude 48.647 and longitude -2.009. Stay updated with localized weather information tailored for Saint-Malo.