Suilven

Mountain Distinctive Scottish mountain with steep rhyolite ridge

In northwest Scotland Suilven rises as a distinctive ridge above moorland and lochs. Hikers take steep routes for coastal viewpoints and the mountain’s unusual isolated profile.

Main image

Suilven is a distinctive inselberg ridge in the Assynt hills of Sutherland in northwest Scotland, notable for its steep-sided profile and narrow crest. Its highest point, Caisteal Liath, reaches 731 metres above sea level.

The mountain is popular with hillwalkers and scramblers for its striking silhouette and panoramic summit views; approach routes cross moorland and minor tracks rather than developed trails. Many ascents require a mixture of steep walking and simple scrambling over rocky ground.

Suilven’s shape results from glacial sculpting of Torridonian sandstone during and following the last Ice Age, leaving the hard ridge standing above surrounding eroded terrain. It has long been a landmark in local geography and mapping.

Suilven lies in the Assynt area of Sutherland on Scotland’s northwest coast, within a remote moorland and loch-strewn landscape; nearby settlements include small villages such as Lochinver and the town of Ullapool to the west and southwest respectively.

  • Summit height: Summit height is 731 metres at the peak called Caisteal Liath, making it a distinctive isolated ridge in the Assynt area.
Suilven
Suilven, Assynt, Sutherland, Scotland (remote)
58.1155, -5.1368

How to Get to Suilven #

Nearest towns: Lochinver (approx. 30-40 km). Access via A837 and local minor roads; start points for hikes commonly approached from Inverkirkaig with parking and guided options available.

Tips for Visiting Suilven #

  • Hire a local guide for the Suilven traverse - the mountain's ridgelines can be complex and its weather notoriously changeable.
  • Start very early in summer for longer daylight windows; midges can be bad in calm, humid conditions.

Best Time to Visit Suilven #

Best in summer for access and daylight, but be prepared for rain and sudden wind at any time of year.

Summer
June-August · 5-15°C
Milder weather and long daylight; best for hillwalking and scrambling.
Autumn
September-October · 0-10°C
Crisper air and fewer midges; colors shift to bracken and berry tones.

Weather & Climate near Suilven #

Climate

Suilven's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in December). Temperatures range from 0°C to 15°C. Heavy rainfall (2112 mm/year), wettest in November.

Best Time to Visit
AprilMayJune
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-9°
Coldest Month
Monthly Conditions

January

January is cold with highs of 5°C and lows of 0°C. Heavy rain (231 mm), mostly overcast skies, and breezy conditions.

28 Poor

Comfort

Feels Like Cold
C
Temperature
93%
Humidity
Very Humid

Weather

231 mm
Rainfall
9.3 m/s
Wind
Breezy
0.0
UV Index
Low
6.9h daylight

February

February is cold with highs of 5°C and lows of 0°C. Significant rainfall (160 mm), mostly overcast skies, and breezy conditions.

30 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

160 mm
Rainfall
9.2 m/s
Wind
Breezy
0.1
UV Index
Low
9.1h daylight

March

March is cold with highs of 6°C and lows of 0°C. Significant rainfall (197 mm), mostly overcast skies, and breezy conditions.

32 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

197 mm
Rainfall
8.9 m/s
Wind
Breezy
0.2
UV Index
Low
11.6h daylight

April

April is cold with highs of 9°C and lows of 2°C. Significant rainfall (117 mm), mostly overcast skies, and breezy conditions.

48 Poor

Comfort

Feels Like Cold
C
Temperature
87%
Humidity
Very Humid

Weather

117 mm
Rainfall
7.3 m/s
Wind
Breezy
0.6
UV Index
Moderate
14.2h daylight

May

May is cold with highs of 12°C and lows of 4°C. Significant rainfall (102 mm), mostly overcast skies, and breezy conditions.

48 Poor

Comfort

Feels Like Cold
C
Temperature
12°
85%
Humidity
Very Humid

Weather

102 mm
Rainfall
6.6 m/s
Wind
Breezy
0.9
UV Index
Moderate
16.6h daylight

June

June is cool with highs of 14°C and lows of 7°C. Significant rainfall (116 mm), mostly overcast skies, and breezy conditions.

48 Poor

Comfort

10°
Feels Like Cool
10°C
Temperature
14°
86%
Humidity
Very Humid

Weather

116 mm
Rainfall
6.5 m/s
Wind
Breezy
1.1
UV Index
High
17.9h daylight

July

July is cool with highs of 15°C and lows of 9°C. Significant rainfall (126 mm), mostly overcast skies, and breezy conditions.

46 Poor

Comfort

12°
Feels Like Cool
12°C
Temperature
15°
87%
Humidity
Very Humid

Weather

126 mm
Rainfall
6.1 m/s
Wind
Breezy
1.1
UV Index
High
17.2h daylight

August

August is cool with highs of 15°C and lows of 9°C. Significant rainfall (148 mm), mostly overcast skies, and breezy conditions.

46 Poor

Comfort

12°
Feels Like Cool
12°C
Temperature
15°
88%
Humidity
Very Humid

Weather

148 mm
Rainfall
6.1 m/s
Wind
Breezy
0.8
UV Index
Moderate
15.1h daylight

September

September is cool with highs of 13°C and lows of 7°C. Heavy rain (205 mm), mostly overcast skies, and breezy conditions.

42 Poor

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
89%
Humidity
Very Humid

Weather

205 mm
Rainfall
7.1 m/s
Wind
Breezy
0.4
UV Index
Low
12.6h daylight

October

October is cold with highs of 10°C and lows of 4°C. Heavy rain (233 mm), mostly overcast skies, and breezy conditions.

40 Poor

Comfort

Feels Like Cold
C
Temperature
10°
91%
Humidity
Very Humid

Weather

233 mm
Rainfall
8.2 m/s
Wind
Breezy
0.1
UV Index
Low
10.0h daylight

November

November is cold with highs of 7°C and lows of 2°C. The wettest month with heavy rain (247 mm), mostly overcast skies, and breezy conditions.

30 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

247 mm
Rainfall
8.5 m/s
Wind
Breezy
0.0
UV Index
Low
7.6h daylight

December

December is the coolest month with highs of 5°C and lows of 0°C. Heavy rain (230 mm), mostly overcast skies, and breezy conditions.

30 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
92%
Humidity
Very Humid

Weather

230 mm
Rainfall
8.3 m/s
Wind
Breezy
0.0
UV Index
Low
6.2h daylight

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