Gros Morne Mountain

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Gros Morne Mountain

Mountain

Gros Morne Mountain is an 806 m peak in Gros Morne National Park on the west coast of Newfoundland and Labrador; visitors come for its weathered quartzite summit, long hike on the James Callaghan Trail and wide coastal and fjord views.

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Gros Morne Mountain essentials

Address: Gros Morne National Park, near Rocky Harbour, Newfoundland and Labrador, Canada

Gros Morne is a weathered rock dome whose summit is mainly quartzite and is the second-highest peak on Newfoundland. It rises within the Long Range Mountains and sits in the geologically diverse setting of the national park.

The mountain supports alpine habitats and species such as rock ptarmigan, arctic hare and caribou; these sensitive areas are managed for wildlife protection. The summit area can feel exposed and arctic in character despite its coastal location.

Access is most commonly by the James Callaghan Trail, a 17 km route established in 1977 that approaches the mountain from park trailheads. Note the summit portion of the trail is seasonally closed for wildlife protection between May 1 and June 28, so check park notices before planning a summit attempt.

Visiting feels remote even within the park: expect a long, sometimes steep hike, variable weather and rewarding panoramic views rather than facilities or services on the route.

  • Quartzite summit dome: The weathered quartzite cap gives the summit its distinctive pale, rocky appearance and wide uninterrupted views.
  • Alpine wildlife: Look for tundra species such as rock ptarmigan, arctic hare and occasional caribou in the higher zones.
  • Long-range and coastal panoramas: From the upper slopes you can see the Long Range Mountains and stretches of coast and fjords that define the park landscape.
  • James Callaghan Trail experience: The 17 km James Callaghan Trail is the classic approach, offering varied terrain and a sustained mountain hike.
  • Nearby park highlights: Combine the hike with visits to other park features such as the Tablelands or Western Brook Pond on separate days.
Things to Do
When to Go

Best Time to Visit Gros Morne Mountain#

Gros Morne Mountain is best visited in the warmer months when the summit is free of seasonal closures and trail conditions are more reliable.

Summer (best)
July - August · 8°C - 18°C (46°F - 64°F)
Warmer, more stable conditions and full trail access make summer the best time for summit hikes and long approaches.
Late summer and early fall
September - October · -1°C - 12°C (30°F - 54°F)
Fewer visitors, crisp air and seasonal color, but weather becomes more changeable and peak daylight shortens.
Spring (restricted)
May - June · -1°C - 15°C (30°F - 59°F)
The summit portion of the trail is closed May 1 to June 28 for wildlife protection, and conditions can still be snowy and wet through June.

Weather & Climate near Gros Morne Mountain#

Climate

Gros Morne Mountain's climate is classified as Subarctic - Subarctic climate with cool summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -16°C to 18°C. Abundant rainfall (1489 mm/year), wettest in September.

Air Quality: AQI 14 Good
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
28°
Warmest Month
-30°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -15° - -7° -19° 136 mm overcast 99% 5.7 m/s 0.1 low 8.5h
February Poor -17° - -8° -20° 110 mm overcast 99% 5.6 m/s 0.2 low 9.9h
March Poor -13° - -3° -16° 101 mm overcast 98% 5.8 m/s 0.4 low 11.7h
April Poor -6° - 2° -8° 86 mm overcast 92% 5.4 m/s 0.8 moderate 13.6h
May Poor -1° - 8° -1° 107 mm overcast 83% 4.7 m/s 1.1 high 15.2h
June Acceptable 5° - 15° 7° 122 mm overcast 83% 4.4 m/s 1.3 high 16.0h
July Good 9° - 18° 14° 118 mm overcast 84% 4.1 m/s 1.4 high 15.6h
August Acceptable 8° - 17° 13° 143 mm overcast 86% 4.2 m/s 1.1 high 14.2h
September Poor 4° - 12° 5° 149 mm overcast 87% 4.6 m/s 0.7 moderate 12.4h
October Poor -1° - 6° -2° 143 mm overcast 90% 4.8 m/s 0.3 low 10.6h
November Poor -6° - 0° -9° 139 mm overcast 92% 4.9 m/s 0.1 low 8.9h
December Poor -12° - -4° -15° 135 mm overcast 97% 5.3 m/s 0.0 low 8.0h
Getting There & Around

How to Get to Gros Morne Mountain#

The nearest community is Rocky Harbour, the local service centre for western Gros Morne National Park; the mountain and trailheads are reached from roads and trailheads within the park.

The closest major airport is Deer Lake Regional Airport; there are no rail connections to the area, so the last stretch is by car or local transport into the park and then on foot along the James Callaghan Trail from the trailhead - check park maps and local advice for exact trailheads and access arrangements.

Tips for Visiting Gros Morne Mountain#

  • The summit portion of the James Callaghan Trail is closed May 1 to June 28 for wildlife protection - confirm current closures before you go.
  • Weather changes quickly and precipitation is frequent, so bring waterproof layers, warm insulation and wind protection even in summer.
  • The 17 km approach and exposed upper terrain require good boots, route-finding skills and self-sufficiency; plan for a full day or an overnight if desired.
  • Cell coverage can be unreliable in the park; carry a map, compass or GPS and tell someone your plans.
  • Respect alpine vegetation and wildlife by staying on established trails and avoiding disturbance to sensitive areas.