Best time to hike the Mount Assiniboine Traverse
Best: July–September.
The Mount Assiniboine Traverse is 52 km long, in 4 stages. Below is the average weather for every month at about 2,015 m, the middle height of the trail (1,707–2,373 m), from 10 years of daily data (2015–2024).
Weather month by month
| Month | High °C | Low °C | Rain mm | Rain days | Daylight h | Snow cm |
|---|---|---|---|---|---|---|
| January | −9° | −17° | 39 | 13 | 8.4 | 39 |
| February | −9° | −19° | 50 | 14 | 9.9 | 50 |
| March | −4° | −14° | 53 | 16 | 11.7 | 53 |
| April | 0° | −10° | 60 | 16 | 13.8 | 56 |
| May | 9° | −2° | 91 | 18 | 15.5 | 28 |
| June | 14° | 2° | 115 | 20 | 16.5 | 3 |
| July | 17° | 6° | 67 | 14 | 16.1 | 0 |
| August | 17° | 5° | 73 | 14 | 14.5 | 0 |
| September | 12° | 1° | 57 | 15 | 12.5 | 7 |
| October | 4° | −5° | 60 | 14 | 10.6 | 45 |
| November | −5° | −13° | 64 | 17 | 8.8 | 63 |
| December | −10° | −18° | 56 | 14 | 7.9 | 56 |
Season notes from our guide
The hiking season is short: from early July, when the snow leaves Citadel Pass and Wonder Pass, to late September. In 2026 record snowpack delayed access to Sunshine Meadows until 6 July. Wildflowers peak from mid-July to early August, and the larches turn gold in the second half of September, which is also the busiest time at Lake Magog. Snow can fall in any month, nights are often near freezing at 2,200 m, and summer afternoons bring thunderstorms with hail. Assiniboine Lodge and its helicopter run from about 20 June to 1 October; outside that window there are no services or flights.
Stages, map, elevation profile, places to stay and emergency help, free.
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Offline maps, stages and places to stay on your phone.
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Weather: NASA POWER (MERRA-2 reanalysis), daily values 2015–2024 near 50.92, -115.62, adjusted to 2,015 m. Rain days: days with at least 1 mm. Daylight: sunrise to sunset on the 15th of the month.