September · Italy
Best time to visit Courmayeur in September Weather, crowds & prices
Weather in Courmayeur in September
Average temperature 10°C, 139 mm of rain, about 13 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
1.6/10
Ranked #11 of 12 months
- Avg temp
- 10°C
- Rainfall
- 139 mm
- Humidity
- 75%
- Days with 6h+ sun
- 13
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Courmayeur scores 1.6/10 for snow and ski travel - ranked #11 of 12. Expect around 10°C, 139 mm of rain, and roughly 13 days with 6+ hours of sunshine this month.
Courmayeur sits at the Italian foot of Mont Blanc-glacier views, Skyway cable car, and Aosta Valley skiing. Best window: the core winter snow season, with shoulder weeks for quieter slopes.
September in Courmayeur — the hardest end of the year
September averages 10°C (50°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 139 mm this is a genuinely wet month: about 13 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 1.6/10 here, 11th of 12 months, against 9.3/10 in the destination's best month.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a waterproof shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? February scores 7.7 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Courmayeur in September?
- In September, Courmayeur averages 10°C, 139 mm of rain, and about 13 days with 6+ hours of sunshine. Its climate-comfort score is 1.6/10.
- Is September a good time to visit Courmayeur?
- September earns a 1.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Courmayeur in September?
- Expect about 139 mm of rain in September. Average humidity is 75% and there are about 13 days with 6+ hours of sunshine.
Curated in Courmayeur
Tickets & experiences
Things to do in Courmayeur
Courmayeur, Italy. Live activities and tours from GetYourGuide, matched to this destination.