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Ansgar Walk CC BY-SA 4.0 Wikimedia Commons

Mount Thor

Mountain

Remote Baffin Island peak famous for an extreme vertical rock face-one of the world's steepest. Technical climbers visit for big‑wall routes amid fjords, glaciers and Arctic mountain terrain.

Mount Thor IqaluitCoral HarbourMount Thor

Mount Thor essentials

Address: Mount Thor, Auyuittuq National Park, Baffin Island, Nunavut, Canada

Mount Thor is a mountain on Baffin Island in Nunavut, Canada, famous for its extremely steep west face and granite cliffs. The peak’s west face is renowned among climbers for having one of the world’s largest continuous vertical drops.

The mountain’s west face presents an uninterrupted wall of rock of roughly 1,250 meters in vertical height and includes sections that overhang, making it a notable technical objective for experienced climbers. The surrounding landscape is Arctic alpine with fjords, glaciers, and sparse vegetation.

Mount Thor formed as part of the Baffin Island massif and is set within the high-relief terrain of Auyuittuq National Park and nearby protected areas; climbing and remote expeditions have occurred since the mid-20th century. Access is by expedition logistics from coastal communities or park entry points.

The mountain sits on Baffin Island in the Canadian Arctic, within Auyuittuq National Park territory on rugged terrain that drops to fjords and Arctic waters; the nearest communities are small and travel is logistically demanding.

  • Elevation and vertical drop: Overall elevation is about 1,675 meters with the west face providing an uninterrupted vertical drop of roughly 1,250 meters.

What to See#

  • West face vertical drop: The west face is a single near-vertical granite wall that drops about 1,250 meters and contains an overhanging section often cited as the world’s greatest vertical drop.

Tips for Visiting Mount Thor#

  • Plan any visit for mid‑summer (July-August) when sea ice is at its minimum and access to Auyuittuq National Park approaches (Pangnirtung or Qikiqtarjuaq) is most reliable; outside these months the area is largely inaccessible.
  • Use Pangnirtung as the usual gateway and book any boat/flight and guide services well in advance-mount Thor attracts specialized climbers and expedition logistics are limited and seasonal.
  • Most non‑climbers experience Mount Thor from sea level on boat trips or from vantage points along the Akshayuk Pass approach; if you want close views without technical climbing, arrange a coastal boat trip or guided day hikes through Parks Canada in advance.
When to Go

Best Time to Visit Mount Thor#

The brief Arctic summer (primarily July-August) is the best time to attempt visiting or climbing Mount Thor when access and weather are at their most favorable.

Short Arctic summer
July-August · ~0-10°C (can be near freezing)
The brief summer window offers the best access by expedition/boat for climbing and viewing Mount Thor; conditions are cold but thawed relative to the rest of the year.
Rest of year (shoulder and winter)
September-June · well below freezing in winter months
Sea ice, extreme cold and very limited accessibility make most months impractical for general visitors; travel is possible only with specialized Arctic expeditions during the short summer.

Weather & Climate near Mount Thor#

Climate

Mount Thor's climate is classified as Tundra - Tundra climate with cold summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -30°C to 8°C. Moderate rainfall (558 mm/year).

Air Quality: AQI 10 Good
Best Time to Visit
DecemberJuneJuly
Temperature & Rainfall
Temperature Range
17°
Warmest Month
-50°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -29° - -22° -35° 26 mm partly cloudy 90% 3.9 m/s 0.0 low 3.8h
February Poor -30° - -22° -36° 25 mm partly cloudy 90% 4.0 m/s 0.0 low 7.8h
March Poor -27° - -18° -32° 24 mm partly cloudy 91% 4.1 m/s 0.2 low 11.5h
April Poor -20° - -11° -24° 34 mm partly cloudy 88% 4.0 m/s 0.7 moderate 15.2h
May Poor -11° - -3° -13° 45 mm overcast 88% 4.4 m/s 1.2 high 19.1h
June Poor -3° - 5° -3° 59 mm overcast 86% 4.2 m/s 1.1 high 22.6h
July Poor 1° - 8° 1° 67 mm overcast 84% 4.0 m/s 1.1 high 20.6h
August Poor 0° - 6° -1° 76 mm overcast 87% 4.1 m/s 0.7 moderate 16.6h
September Poor -5° - 0° -7° 64 mm overcast 90% 4.4 m/s 0.3 low 12.9h
October Poor -11° - -6° -15° 57 mm partly cloudy 94% 4.4 m/s 0.1 low 9.2h
November Poor -18° - -12° -23° 50 mm partly cloudy 95% 4.2 m/s 0.0 low 5.2h
December Poor -26° - -19° -31° 31 mm mostly sunny 92% 3.9 m/s 0.0 low 1.5h