Great Glen Valley

Scotland's long glen, major geological fault line

The Great Glen in Scotland follows a long geological fault from Fort William to Inverness. The Caledonian Canal, Loch Ness and hill trails offer boating, walking and Highland scenery.

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Great Glen at a Glance#

Address: Great Glen, Highlands of Scotland (A82 Loch Ness corridor)

Website: https://www.visitscotland.com/

Hours: Accessible year‑round (outdoor natural area)

Admission: Free (Great Glen is a natural landscape; activities and visitor centres may have fees)

About Great Glen#

The Great Glen is a long geological valley in the Highlands of Scotland running roughly northeast to southwest and aligned with the Great Glen Fault. It is a major landscape feature containing several lochs and a historic transport corridor.

The valley formed along a major fault line and has been used for travel and settlement since prehistoric times; in more recent centuries it hosted engineering works such as the Caledonian Canal and infrastructure linking the Highlands.

Stretching between the city of Inverness on the northeast and Fort William on the southwest, the Great Glen bisects the Scottish Highlands and is traversed by road and rail routes connecting these regional centres.

  • Length and accessibility: The glen follows the Great Glen Fault and provides linear travel routes for roads, rail and the canal; it offers multiple viewpoints and forested and mountainous scenery along roughly 100 kilometres of landscape.

What to See#

  • Loch Ness: Loch Ness, the largest and most famous of the lochs along the glen, running more than 30 kilometres within the valley and forming the most prominent water body.
  • Caledonian Canal: The Caledonian Canal which follows parts of the glen and links a series of lochs to provide a navigable inland waterway across the Great Glen.
  • Inverness and Fort William: Major towns at or near the glen’s ends, notably Inverness at the northeast and Fort William at the southwest, which serve as common access points for visitors.

How to Get to Great Glen#

The A82 runs along the glen from Inverness to Fort William; the corridor is also served by regular bus services. Inverness has rail connections to central Scotland; driving is the most flexible way to explore the glen.

Tips for Visiting Great Glen#

  • Drive the A82 along Loch Ness for the classic scenic route and pull into laybys for photos and short hikes.
  • Try early morning canoeing or kayaking on calmer days for wildlife and solitude.
  • Avoid summer weekends on the main viewpoints to reduce time spent in coach traffic.

Best Time to Visit Great Glen#

Best visited late spring through autumn for road access and outdoor activities; winter can be dramatic but challenging.

Spring
April-June · 2-12°C
Longer daylight and spring greens on the glen; sheep lambing season in places.
Summer
July-August · 8-18°C
Warmest months with the most reliable road access; busiest for tourists.
Autumn
September-October · 2-12°C
Crisp air and autumn colours; good for hikes and quieter viewpoints.

Weather & Climate near Great Glen#

Climate

Great Glen's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in February). Temperatures range from 0°C to 18°C. Abundant rainfall (1258 mm/year), wettest in January.

Air Quality: AQI 20 Good
Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-11°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor 1° - 7° 1° 152 mm overcast 95% 3.6 m/s 0.0 low 7.1h
February Poor 0° - 7° 0° 97 mm overcast 93% 3.5 m/s 0.1 low 9.2h
March Poor 2° - 8° 2° 121 mm overcast 90% 3.7 m/s 0.2 low 11.6h
April Acceptable 3° - 11° 5° 62 mm overcast 86% 3.3 m/s 0.6 moderate 14.1h
May Acceptable 6° - 14° 8° 66 mm overcast 83% 3.1 m/s 0.9 moderate 16.4h
June Good 8° - 16° 12° 69 mm overcast 84% 3.1 m/s 1.1 high 17.6h
July Good 10° - 18° 14° 71 mm overcast 85% 2.9 m/s 1.0 high 17.0h
August Acceptable 10° - 18° 14° 84 mm overcast 87% 2.7 m/s 0.8 moderate 15.0h
September Acceptable 8° - 15° 12° 118 mm overcast 89% 3.0 m/s 0.5 low 12.6h
October Poor 6° - 12° 7° 132 mm overcast 92% 3.0 m/s 0.2 low 10.1h
November Poor 3° - 9° 3° 143 mm overcast 95% 3.0 m/s 0.0 low 7.8h
December Poor 1° - 7° 2° 143 mm overcast 95% 3.1 m/s 0.0 low 6.4h

Nearby Attractions to Great Glen#