Tunnsjøen Lake

Large lake in Trøndelag known for island-dotted waters

A deep, forest-fringed lake in Trøndelag, Tunnsjöen draws anglers, boaters and hikers to shoreline cabins, fishing spots and trails that cross pine forests and rocky outcrops.

Main image

Tunnsjøen at a Glance#

Address: Tunnsjøen (Tunnsjøen), Trøndelag, Norway

How to Get to Tunnsjøen#

Tunnsjöen is reached by regional roads from towns in Trøndelag. The nearest larger hubs are Steinkjer and Grong; from there, local roads and forest tracks lead to lake access points. A high-clearance vehicle is useful in wet seasons.

Tips for Visiting Tunnsjøen#

  • Bring a map and check ice conditions in winter-this is a deep lake with steep underwater drop-offs.
  • Fishermen prize the lake for trout; local angling regulations and licences apply.
  • The area is remote: mobile coverage can be patchy; plan routes and supplies before heading out.

Best Time to Visit Tunnsjøen#

Summer is best for hiking and boating; winter offers ice activities but demands local knowledge and safety precautions.

Summer
June-August · 5-18°C
Fishing, boating and hiking; long daylight hours in mid-summer.
Winter
December-March · -20-0°C
Ice-covered lake for ice fishing and snowmobiling; extreme cold and variable ice thickness require caution.

Weather & Climate near Tunnsjøen#

Climate

Tunnsjøen's climate is classified as Subarctic - Subarctic climate with cool summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -10°C to 16°C. Moderate rainfall (952 mm/year).

Best Time to Visit
JulyMayJune
Temperature & Rainfall
Temperature Range
27°
Warmest Month
-31°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of -3°C and lows of -10°C. Regular rainfall (92 mm) and mostly overcast skies.

32 Poor

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-10° -3°
98%
Humidity
Very Humid

Weather

92 mm
Rainfall
2.2 m/s
Wind
Calm
0.0
UV Index
Low
5.0h daylight

February

February is the coldest month with highs of -3°C and lows of -10°C. Moderate rainfall (72 mm) and mostly overcast skies.

30 Poor

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-10° -3°
98%
Humidity
Very Humid

Weather

72 mm
Rainfall
2.4 m/s
Wind
Calm
0.0
UV Index
Low
8.2h daylight

March

March is freezing with highs of 0°C and lows of -7°C. Moderate rainfall (75 mm) and mostly overcast skies.

32 Poor

Comfort

-4°
Feels Like Freezing
-4°C
Temperature
-7°
97%
Humidity
Very Humid

Weather

75 mm
Rainfall
2.6 m/s
Wind
Calm
0.2
UV Index
Low
11.5h daylight

April

April is freezing with highs of 3°C and lows of -4°C. Moderate rainfall (51 mm) and mostly overcast skies.

45 Poor

Comfort

Feels Like Freezing
C
Temperature
-4°
94%
Humidity
Very Humid

Weather

51 mm
Rainfall
2.4 m/s
Wind
Calm
0.6
UV Index
Moderate
14.9h daylight

May

May is cold with highs of 9°C and lows of 1°C. Moderate rainfall (44 mm) and mostly overcast skies.

55 Acceptable

Comfort

Feels Like Cold
C
Temperature
86%
Humidity
Very Humid

Weather

44 mm
Rainfall
2.4 m/s
Wind
Calm
0.9
UV Index
Moderate
18.2h daylight

June

June is cold with highs of 14°C and lows of 6°C. Moderate rainfall (71 mm) and mostly overcast skies.

53 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
14°
82%
Humidity
Very Humid

Weather

71 mm
Rainfall
2.3 m/s
Wind
Calm
1.1
UV Index
High
20.4h daylight

July

July is cool with highs of 16°C and lows of 8°C. Regular rainfall (89 mm) and mostly overcast skies.

61 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
16°
83%
Humidity
Very Humid

Weather

89 mm
Rainfall
2.1 m/s
Wind
Calm
1.1
UV Index
High
19.3h daylight

August

August is cool with highs of 15°C and lows of 8°C. Moderate rainfall (79 mm) and mostly overcast skies.

53 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
15°
86%
Humidity
Very Humid

Weather

79 mm
Rainfall
2.2 m/s
Wind
Calm
0.7
UV Index
Moderate
16.1h daylight

September

September is cold with highs of 10°C and lows of 4°C. The wettest month with heavy rain (111 mm) and mostly overcast skies.

49 Poor

Comfort

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

Weather

111 mm
Rainfall
2.2 m/s
Wind
Calm
0.3
UV Index
Low
12.8h daylight

October

October is cold with highs of 5°C and lows of 1°C. Significant rainfall (107 mm) and mostly overcast skies.

37 Poor

Comfort

Feels Like Cold
C
Temperature
96%
Humidity
Very Humid

Weather

107 mm
Rainfall
2.4 m/s
Wind
Calm
0.1
UV Index
Low
9.5h daylight

November

November is freezing with highs of 1°C and lows of -4°C. Regular rainfall (81 mm) and mostly overcast skies.

32 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-4°
98%
Humidity
Very Humid

Weather

81 mm
Rainfall
2.3 m/s
Wind
Calm
0.0
UV Index
Low
6.0h daylight

December

December is freezing with highs of -2°C and lows of -7°C. Regular rainfall (80 mm) and mostly overcast skies.

32 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-7° -2°
98%
Humidity
Very Humid

Weather

80 mm
Rainfall
2.4 m/s
Wind
Calm
0.0
UV Index
Low
3.6h daylight