Arnensee Lake

High Alpine reservoir lake in Canton of Bern

Arnensee, a high‑valley reservoir in the Bernese uplands, offers hiking, fishing and short lakeside walks. Day‑trippers use local trails for alpine views and freshwater scenery.

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Arnensee at a Glance#

Address: Arnensee, Canton of Bern, Switzerland

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How to Get to Arnensee#

Arnensee is reached from Raron or Gsteig via mountain roads and marked hiking trails; local buses serve trailheads in season. Driving from major Swiss towns requires mountain-road navigation.

Tips for Visiting Arnensee#

  • The Arnensee is best appreciated from the walking path that circles the lake - the 5-6 km trail gives multiple vantage points.
  • In summer hire a rowing boat at designated spots for a more private perspective on the water.
  • Check local alpine weather forecasts before heading into the surrounding peaks; conditions can shift quickly.

Best Time to Visit Arnensee#

Best in summer for hiking and clear water views, and in winter for snowscape activities if conditions allow.

Summer
June-September · 10-20°C
Ideal for hiking, boating and alpine flowers.
Winter
December-March · -5-5°C
Frozen lake and cross-country skiing in cold spells.

Weather & Climate near Arnensee#

Climate

Arnensee's climate is classified as Subarctic - Subarctic climate with cool summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -6°C to 17°C. Abundant rainfall (1345 mm/year), wettest in December.

Best Time to Visit
JulyAugustSeptember
Temperature & Rainfall
Temperature Range
28°
Warmest Month
-26°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of 0°C and lows of -6°C. Significant rainfall (126 mm) and mostly overcast skies.

29 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-6° – 0°
85%
Humidity
Very Humid

Weather

126 mm
Rainfall
3.7 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.9h daylight

February

February is freezing with highs of 0°C and lows of -6°C. Significant rainfall (134 mm) and mostly overcast skies.

29 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-7° – 0°
85%
Humidity
Very Humid

Weather

134 mm
Rainfall
3.8 m/s
Wind
Light Breeze
0.3
UV Index
Low
10.2h daylight

March

March is freezing with highs of 2°C and lows of -5°C. Regular rainfall (98 mm) and partly cloudy skies.

38 Poor

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-5° – 2°
84%
Humidity
Very Humid

Weather

98 mm
Rainfall
3.9 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 5°C and lows of -2°C. Regular rainfall (100 mm) and partly cloudy skies.

44 Poor

Comfort

1°
Feels Like Cold
1°C
Temperature
-2° – 5°
80%
Humidity
Very Humid

Weather

100 mm
Rainfall
3.6 m/s
Wind
Light Breeze
1.0
UV Index
High
13.4h daylight

May

May is cold with highs of 10°C and lows of 2°C. Significant rainfall (110 mm) and mostly overcast skies.

50 Acceptable

Comfort

6°
Feels Like Cold
6°C
Temperature
2° – 10°
80%
Humidity
Very Humid

Weather

110 mm
Rainfall
3.5 m/s
Wind
Light Breeze
1.4
UV Index
High
14.8h daylight

June

June is cold with highs of 14°C and lows of 5°C. Significant rainfall (113 mm) and partly cloudy skies.

56 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
5° – 14°
78%
Humidity
Very Humid

Weather

113 mm
Rainfall
3.4 m/s
Wind
Light Breeze
1.7
UV Index
Very High
15.6h daylight

July

July is cool with highs of 17°C and lows of 8°C. Regular rainfall (99 mm) and partly cloudy skies.

66 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
8° – 17°
77%
Humidity
Very Humid

Weather

99 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.8
UV Index
Very High
15.2h daylight

August

August is cool with highs of 17°C and lows of 8°C. Regular rainfall (100 mm) and partly cloudy skies.

64 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
8° – 17°
77%
Humidity
Very Humid

Weather

100 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.5
UV Index
High
14.0h daylight

September

September is cold with highs of 14°C and lows of 5°C. Regular rainfall (85 mm) and partly cloudy skies.

58 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
5° – 14°
80%
Humidity
Very Humid

Weather

85 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.0
UV Index
Moderate
12.4h daylight

October

October is cold with highs of 9°C and lows of 2°C. Significant rainfall (110 mm) and partly cloudy skies.

54 Acceptable

Comfort

6°
Feels Like Cold
6°C
Temperature
2° – 9°
80%
Humidity
Very Humid

Weather

110 mm
Rainfall
3.4 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
10.7h daylight

November

November is cold with highs of 4°C and lows of -2°C. Significant rainfall (127 mm) and mostly overcast skies.

38 Poor

Comfort

1°
Feels Like Cold
1°C
Temperature
-3° – 4°
85%
Humidity
Very Humid

Weather

127 mm
Rainfall
3.8 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.3h daylight

December

December is freezing with highs of 1°C and lows of -5°C. The wettest month with heavy rain (143 mm) and mostly overcast skies.

29 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-5° – 1°
84%
Humidity
Very Humid

Weather

143 mm
Rainfall
3.8 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.5h daylight

Nearby Attractions to Arnensee#

Gummfluh
Gummfluh
Prominent mountain in Vaud with panoramic alpine views
Mountain 6.0 km
Diablerets
Diablerets
Swiss alpine massif with glacier and ski resorts
Mountains 9.7 km