SeasonMapMont-Tremblant (Tremblant) weather in September
Canada
September in Mont-Tremblant: nice, rainy, with clean air — one of the weakest months to visit.
#12 of 12 months in Mont-Tremblant · #1380 of 1383 destinations to visit in September · comfort 11/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Mont-Tremblant in September
Other months in Mont-Tremblant
Mont Tremblant's forum calls February cold but excellent for skiing — proper winter layers, mitts rather than gloves, and a good coat are standard advice, with a handful of snowstorms typically rolling through over the month. Regulars note it's usually a sunny month despite the cold, and conditions get milder as the month goes on.
Add your own note from Mont-Tremblant's card on the map.
Mont-Tremblant climate normals — September
| Daytime high | 20°C / 68°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 87 mm / 3.4 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 11°C / 52°F | |
| Sunshine | 9 h/day | |
| Daylight | 12.5 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Mont-Tremblant in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsLaurentian fall colour, Summer break in Canada(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Mont-Tremblant's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherMont-Tremblant's weather peaks December–February.
Best weatherFair weatherToughest weather
What's on in Mont-Tremblant in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Laurentian fall colour
18 Sep – 15 Oct · usuallyAutumn colourCrowdedThe sugar maples turn from the last week of September, earliest at the summit and a fortnight later in the valley. The resort runs weekend music under it and the gondola queue is the price.
Nearby, and something's on
Within 300 km of Mont-Tremblant — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Mont-Tremblant?
Mont-Tremblant in September — FAQ
- Is September a good time to visit Mont-Tremblant?
- September in Mont-Tremblant: nice, rainy, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Mont-Tremblant on SeasonMap's comfort score (11/100).
- What is the weather like in Mont-Tremblant in September?
- In September, Mont-Tremblant averages a daily high of 19.8°C and a low of 11.8°C, with about 87.3 mm of rain over roughly 9 rainy days.
- What is the air quality in Mont-Tremblant in September?
- Mont-Tremblant has a mean US Air Quality Index of about 35 in September.
Other months in Mont-Tremblant
Compare Mont-Tremblant in September
Warmer or cooler than Mont-Tremblant in September
Similar destinations in North America — September
Within 300 km: Montreal's Fall colour around 25 Sep – 20 Oct, and Ottawa's Gatineau Park colour around 25 Sep – 20 Oct.