Weather in Saint-Malo for September 2026
In general, the average temperature in Saint-Malo at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18 °C by the end of September.
Saint-Malo experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 76.7 mm.
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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. |  Light rain shower | 22° /15° | 7.7 mm | 5 | |
| 2 Sept. |  Sunny | 22° /14° | 3.5 mm | 5 | |
| 3 Sept. | Sunny | 23° /15° | 1 mm | 5 | |
| 4 Sept. | Patchy rain possible | 23° /15° | 0.6 mm | 5 | |
| 5 Sept. |  Partly cloudy | 23° /15° | 2 mm | 5 | |
| 6 Sept. | Patchy rain possible | 24° /15° | 1.1 mm | 5 | |
| 7 Sept. | Sunny | 23° /16° | 3.6 mm | 6 | |
| 8 Sept. | Partly cloudy | 21° /15° | 6.6 mm | 5 | |
| 9 Sept. | Patchy rain possible | 22° /15° | 2.7 mm | 5 | |
| 10 Sept. | Light rain shower | 21° /14° | 3.5 mm | 5 | |
| 11 Sept. | Partly cloudy | 21° /13° | 1.2 mm | 5 | |
| 12 Sept. | Light rain shower | 21° /14° | 1.4 mm | 5 | |
| 13 Sept. | Partly cloudy | 21° /15° | 4.8 mm | 5 | |
| 14 Sept. |  Moderate or heavy rain shower | 21° /14° | 3.2 mm | 5 | |
| 15 Sept. | Patchy rain possible | 20° /13° | 0.3 mm | 5 | |
| 16 Sept. | Patchy rain possible | 20° /14° | 0.9 mm | 4 | |
| 17 Sept. | Partly cloudy | 21° /14° | 0.9 mm | 5 | |
| 18 Sept. | Partly cloudy | 21° /13° | 0.8 mm | 5 | |
| 19 Sept. |  Overcast | 22° /14° | 0.2 mm | 5 | |
| 20 Sept. | Overcast | 20° /13° | 4.3 mm | 5 | |
| 21 Sept. |  Patchy light rain with thunder | 19° /12° | 3.7 mm | 5 | |
| 22 Sept. | Light rain shower | 19° /12° | 2.9 mm | 5 | |
| 23 Sept. | Patchy rain possible | 18° /12° | 3.1 mm | 4 | |
| 24 Sept. | Light rain shower | 19° /13° | 2 mm | 5 | |
| 25 Sept. | Patchy rain possible | 18° /12° | 2.8 mm | 4 | |
| 26 Sept. | Patchy rain possible | 19° /13° | 2.1 mm | 4 | |
| 27 Sept. | Moderate or heavy rain shower | 18° /12° | 2.8 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /12° | 4.2 mm | 4 | |
| 29 Sept. | Patchy rain possible | 17° /11° | 1.8 mm | 4 | |
| 30 Sept. | Sunny | 18° /11° | 1 mm | 5 | |
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Saint-Malo weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 22°/15° | 20°/14° | 17°/12° |
| Rainfall | 50 mm | 77 mm | 78 mm |
| Wind | 22.9 km/h | 24.7 km/h | 27.3 km/h |
| Humidity | 73% | 74% | 76% |
| Rainy days | 22 days | 25 days | 26 days |
| Dry days | 9 days | 5 days | 5 days |
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Saint-Malo in September - FAQ
What are the expected maximum and minimum temperatures in Saint-Malo during September?
How much rainfall should be expected in Saint-Malo during September?
What are the typical wind conditions in Saint-Malo during September?
September rainfall patterns in Saint-Malo
UV exposure in Saint-Malo during September
What to pack to Saint-Malo in September?
Mild · highs around 20 °C, frequent showers
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
👟 Footwear
🎒 Accessories
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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.