Lake Guerlédan

Reservoir Large artificial lake in Brittany, created by dam

In central Brittany, Lac de Guerlédan fills a 1930s hydro valley; visitors hire boats, follow trails along the drowned valley and cycle the lake road, passing exposed stone bridges and wooded slopes.

Main image
Lake Guerlédan
Lac de Guerlédan, Brittany, France (near Mûr-de-Bretagne)
48.1970, -3.0278
Daily sunrise-sunset (park areas)
Free to visit the lake perimeter; water activities may carry fees

How to Get to Lake Guerlédan #

Drive from Rennes or Pontivy via D roads toward Mûr-de-Bretagne; the lake is signposted and has several parking areas and trailheads.

Tips for Visiting Lake Guerlédan #

  • Cycle the full loop to appreciate the variety of viewpoints along the dam
  • Sample local crepes or cider in nearby market towns-Brittany is proud of both
  • Bring a windproof jacket-the lake is exposed in places and can be breezy

Best Time to Visit Lake Guerlédan #

Summer is best for boat hires and activities, while spring and autumn offer quieter visiting conditions.

Summer (Jun-Aug)
June-August · 15-25°C
Warm weather, boat hire available, most services open
Spring (Apr-May)
April-May · 8-18°C
Fewer crowds and flowering hedgerows
Autumn (Sep-Oct)
September-October · 8-18°C
Crisp air and colorful foliage; quieter after summer

Weather & Climate near Lake Guerlédan #

Climate

Lake Guerlédan's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in August) and cold winters (coldest in January). Temperatures range from 3°C to 21°C. Moderate rainfall (978 mm/year).

Temperature & Rainfall
Temperature Range
21°
Warmest Month
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 8°C and lows of 4°C. Significant rainfall (113 mm).

Comfort

Feels Like Cold
C
Temperature

Weather

113 mm
Rainfall
4.2 m/s
Wind
Light Breeze

February

February is cold with highs of 9°C and lows of 3°C. Regular rainfall (90 mm).

Comfort

Feels Like Cold
C
Temperature

Weather

90 mm
Rainfall
4.2 m/s
Wind
Light Breeze

March

March is cold with highs of 11°C and lows of 5°C. Regular rainfall (81 mm).

Comfort

Feels Like Cold
C
Temperature
11°

Weather

81 mm
Rainfall
4.2 m/s
Wind
Light Breeze

April

April is cold with highs of 12°C and lows of 6°C. Moderate rainfall (65 mm).

Comfort

Feels Like Cold
C
Temperature
13°

Weather

65 mm
Rainfall
4.1 m/s
Wind
Light Breeze

May

May is cool with highs of 16°C and lows of 9°C. Moderate rainfall (70 mm).

Comfort

12°
Feels Like Cool
12°C
Temperature
16°

Weather

70 mm
Rainfall
3.9 m/s
Wind
Light Breeze

June

June is cool with highs of 18°C and lows of 11°C. Moderate rainfall (54 mm).

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 19°

Weather

54 mm
Rainfall
3.6 m/s
Wind
Light Breeze

July

July is cool with highs of 21°C and lows of 13°C. Moderate rainfall (47 mm).

Comfort

17°
Feels Like Cool
17°C
Temperature
13° 21°

Weather

47 mm
Rainfall
3.5 m/s
Wind
Light Breeze

August

August is cool with highs of 21°C and lows of 13°C. Moderate rainfall (54 mm).

Comfort

17°
Feels Like Cool
17°C
Temperature
13° 21°

Weather

54 mm
Rainfall
3.3 m/s
Wind
Light Breeze

September

September is cool with highs of 19°C and lows of 11°C. Moderate rainfall (75 mm).

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 19°

Weather

75 mm
Rainfall
3.3 m/s
Wind
Light Breeze

October

October is cool with highs of 15°C and lows of 9°C. Regular rainfall (97 mm).

Comfort

12°
Feels Like Cool
12°C
Temperature
15°

Weather

97 mm
Rainfall
3.4 m/s
Wind
Light Breeze

November

November is cold with highs of 12°C and lows of 6°C. The wettest month with heavy rain (119 mm).

Comfort

Feels Like Cold
C
Temperature
12°

Weather

119 mm
Rainfall
3.5 m/s
Wind
Light Breeze

December

December is cold with highs of 9°C and lows of 4°C. Significant rainfall (113 mm).

Comfort

Feels Like Cold
C
Temperature

Weather

113 mm
Rainfall
4.1 m/s
Wind
Light Breeze

Nearby Attractions to Lake Guerlédan