Mont-Tremblant (Tremblant) weather in August
August in Mont-Tremblant: warm, rainy, with clean air — not the best time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#9 of 12 months in Mont-Tremblant · #1342 of 1413 destinations to visit in August · comfort 18/100 (tier F)
- Days
- 23°C
- Nights
- 16°C
- Wet days
- 13
- Sun
- 10.3 h
- Humidity
- 78%
- Daylight
- 14 h

Traveller notes on Mont-Tremblant in August
Forum posters describe August temperatures as typically in the mid-20sC, warm enough for shorts, sandals and t-shirts as the daily norm, but consistently flag real day-to-day unpredictability - misty rain, brief thundershowers, sun, wind and calm can all show up within the same day. Posters recommend carrying a light windbreaker or poncho even on a promising morning, given how quickly conditions can shift. Posters note a genuine upside to an August visit: the bugs that plague the region earlier in summer are pretty much gone by this point. Posters consistently recommend weekday visits for noticeably lighter crowds, with weekends busier throughout the summer season.
Other months in Mont-Tremblant
Mont Tremblant-forum threads on a March visit describe March Break as genuinely very crowded, posters naming thirty-minute gondola lines as standard during this mid-month stretch. Regulars call the north side genuinely the better bet for shorter waits, several posters naming this as a real workaround for anyone visiting during the busiest weeks. Posters call spring skiing after the fifteenth through early April genuinely particularly good, several regulars naming this window as a real sweet spot once the crowds thin out. Regulars call a late-season snowstorm genuinely not unusual even this late, several threads naming this a real possibility worth planning around regardless of the spring feel. Posters recommend timing a March trip around the mid-month crowd spike if possible, several regulars calling this standard given how predictable the March Break rush is. The record: 1.3C days, -7.5C nights, an extraordinarily high 95.7mm across over 13 days and 73 percent humidity.
Mont Tremblant-forum threads on a May visit call this genuinely quiet season, posters describing some of the resort buzz as absent compared with peak times though the village itself can feel lovely with spring in full bloom. Regulars call staying in Old Tremblant a real option for anyone prioritizing atmosphere, terraces often open even this early. Posters recommend waiting until after Victoria Day, typically the third week of May, for the real start of fair-weather summer activities. Regulars call early May genuinely spring-like while late May edges toward summer conditions, a real shift happening within the month itself. Posters recommend hiking, biking, kayaking and paddleboarding in Mont-Tremblant National Park as strong late-May options, easy trails and scenic water routes both mentioned repeatedly. The record: 17.4C days feeling like 17C, 7C nights, an extraordinarily high 96.4mm across over 12 days and 68 percent humidity.
Mont Tremblant-forum threads on a July visit call the Blues Festival the biggest event of summer, posters describing free concerts running afternoon into late evening across the second week of the month. Regulars call hiking, biking, kayaking, paddleboarding, fishing, swimming, golf and mini-putt all popular, the resort's outdoor offering considerably broader than the winter focus alone. Posters call the nearby provincial park, well over seventy thousand acres, worth a full day for real wilderness beyond the village. Regulars describe July highs as capable of climbing into the thirties Celsius during a heatwave, air conditioning not universally available in older accommodation around town. Posters recommend checking amenities before booking if staying cool matters. Regulars call the pedestrian village genuinely lively this time of year, real energy from the festival crowd. The record: 24.6C days feeling like 26C, 16.6C nights, 127.2mm across over 14 days and 76 percent humidity.
Mont Tremblant-forum threads on January weather updates describe conditions as genuinely capable of swinging hard, some stretches running a few degrees above freezing while others settle into a deep freeze around negative twenty for a full week. Posters call mid-to-late January the more likely window for the harshest cold. Regulars recommend a face mask or balaclava as real standing advice, frostbite risk genuinely serious during the coldest stretches. Posters describe conditions as unpredictable enough that a specific week could bring rain, great snow, or a partially closed mountain. Regulars call proper layering the real determining factor in comfort, posters consistently reporting a manageable day when dressed correctly. Posters recommend checking a current forecast rather than the general January reputation. The record: -5.7C days feeling like -10C, -14.2C nights, a notably high 84.6cm of fresh accumulation and 79 percent humidity.
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Mont-Tremblant climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Mont-Tremblant in August
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.
BusySummer break in Canada, school holidays in 2 of the markets that fill it(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).
Fair weatherMont-Tremblant's weather peaks December–February.
Best weatherFair weatherToughest weather
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 August — FAQ
- Is August a good time to visit Mont-Tremblant?
- August in Mont-Tremblant: warm, rainy, with clean air — not the best time to visit. It ranks #9 of 12 months for Mont-Tremblant on SeasonMap's comfort score (18/100).
- What is the weather like in Mont-Tremblant in August?
- In August, Mont-Tremblant averages a daily high of 23.3°C and a low of 15.7°C, with about 130 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Mont-Tremblant in August?
- Mont-Tremblant has a mean US Air Quality Index of about 38 in August.
Within 300 km: Stowe's Mount Mansfield summer season around 25 May – 15 Oct, and Quebec City's Grands Feux Loto-Quebec on 4–22 Aug.