Weather in Courmayeur for September 2026
In general, the average temperature in Courmayeur at the beginning of September is 13.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 5.6 °C by the end of September.
Courmayeur in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 210.8 mm.
Is September a good time to visit Courmayeur? check out the best time to travel to Courmayeur page.
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Courmayeur Weather September
Temperatures trend during September in Courmayeur
September weather in Courmayeur day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate rain | 8° /4° | 46 mm | 1 | |
| 2 Sept. |  Patchy light rain with thunder | 10° /3° | 4.5 mm | 4 | |
| 3 Sept. |  Partly cloudy | 16° /3° | 0 mm | 7 | |
| 4 Sept. | Patchy light rain with thunder | 14° /6° | 28 mm | 6 | |
| 5 Sept. |  Thundery outbreaks possible | 11° /3° | 0.6 mm | 7 | |
| 6 Sept. |  Sunny | 17° /2° | 0 mm | 7 | |
| 7 Sept. | Sunny | 20° /5° | 0 mm | 7 | |
| 8 Sept. |  Patchy light drizzle | 16° /8° | 6.3 mm | 5 | |
| 9 Sept. | Patchy light rain with thunder | 11° /6° | 17.9 mm | 3 | |
| 10 Sept. | Patchy light rain with thunder | 11° /4° | 5.6 mm | 3 | |
| 11 Sept. |  Patchy rain possible | 12° /3° | 0 mm | 7 | |
| 12 Sept. | Partly cloudy | 12° /1° | 0 mm | 6 | |
| 13 Sept. | Patchy light rain | 14° /2° | 3.5 mm | 6 | |
| 14 Sept. | Patchy rain possible | 14° /5° | 9.3 mm | 5 | |
| 15 Sept. | Patchy rain possible | 16° /6° | 1.4 mm | 6 | |
| 16 Sept. | Patchy rain possible | 12° /4° | 0.1 mm | 5 | |
| 17 Sept. | Sunny | 15° /4° | 0 mm | 6 | |
| 18 Sept. | Sunny | 20° /8° | 0 mm | 5 | |
| 19 Sept. | Sunny | 20° /8° | 0 mm | 5 | |
| 20 Sept. | Patchy light rain with thunder | 18° /7° | 6.9 mm | 5 | |
| 21 Sept. | Patchy light rain with thunder | 14° /6° | 14.9 mm | 1 | |
| 22 Sept. | Light rain shower | 8° /5° | 15.7 mm | 2 | |
| 23 Sept. | Patchy light rain with thunder | 9° /0° | 21.6 mm | 1 | |
| 24 Sept. |  Moderate or heavy rain with thunder | 2° /0° | 12.4 mm | 1 | |
| 25 Sept. | Light rain shower | 4° /-1° | 5.1 mm | 3 | |
| 26 Sept. | Light rain shower | 2° /0° | 9.5 mm | 1 | |
| 27 Sept. |  Light freezing rain | 3° /-2° | 1.5 mm | 2 | |
| 28 Sept. | Sunny | 7° /-4° | 0 mm | 4 | |
| 29 Sept. | Sunny | 11° /0° | 0 mm | 4 | |
| 30 Sept. | Patchy rain possible | 10° /1° | 0 mm | 4 | |
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Courmayeur weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy light rain with thunder | Patchy light rain with thunder | Patchy rain possible |
| Temperatures | 18°/7° | 12°/3° | 7°/-1° |
| Rainfall | 101 mm | 211 mm | 191 mm |
| Snowfall | 0 cm | 0 cm | 17 cm |
| Wind | 9.7 km/h | 8.5 km/h | 9.5 km/h |
| Humidity | 64% | 76% | 80% |
| Rainy days | 14 days | 17 days | 9 days |
| Snow days | 0 days | 0 days | 4 days |
| Dry days | 17 days | 13 days | 18 days |
Planning a trip to Courmayeur? Discover the best time to visit
Courmayeur in September - FAQ
What are the expected maximum and minimum temperatures in Courmayeur during September?
How much rainfall should be expected in Courmayeur during September?
What are the typical wind conditions in Courmayeur during September?
September rainfall patterns in Courmayeur
What to pack to Courmayeur in September?
Cold & raw · highs around 12 °C, frequent showers
As you prepare for your trip to Courmayeur 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 Courmayeur, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Courmayeur?Get accurate weather forecasts for Courmayeur, located at latitude 45.797 and longitude 6.969. Stay updated with localized weather information tailored for Courmayeur.