Llangorse Lake

Lake Wales' largest natural lake with historic crannog

Largest natural lake in the Brecon Beacons near Llangorse village; used for sailing, coarse fishing, birdwatching and walks to the lakeshore and surrounding hills.

Main image

Llangorse Lake is the largest natural lake in southern Wales, located in Powys within the Brecon Beacons (Bannau Brycheiniog) area. The lake is a shallow freshwater body known for its wildlife, recreational use and archaeological interest.

The lake supports a sailing club and watersports, walking routes around the shoreline and significant birdlife, including reedbeds and wetland species. A lakeside country park and visitor facilities serve recreational and wildlife-watching visitors.

Archaeological work has identified a crannog or artificial island in the lake with remains dating to the Iron Age and early medieval periods; finds from the site have shed light on local settlement and craft activity across centuries.

Llangorse Lake sits beside the village of Llangorse in southern Powys, within the hills of the Brecon Beacons National Park and forming a lowland water feature amid upland terrain.

  • Recreation and size: It is the largest natural lake in southern Wales and supports sailing, birdwatching and a lakeside country park with walking trails and water-sport facilities.
  • Archaeology: An archaeological crannog in the lake dates to the Iron Age and early medieval periods and has produced important finds relating to local settlement and craft activity.

What to See #

  • Crannog (lake island): A reconstructed and archaeologically studied crannog (artificial island) dating to the Iron Age and early medieval periods, visible in the lake and interpreted by local displays.
Llangorse Lake
51.9310, -3.2628

How to Get to Llangorse Lake #

Llangorse Lake is about 6 miles south of Brecon in Powys, Wales. The nearest villages (Llangasty or Bwlch) provide footpaths to the lake; drive via the B4560 and park at marked parking areas by the lake. Local buses from Brecon serve nearby stops in season.

Tips for Visiting Llangorse Lake #

  • Hire a kayak or take a guided boat trip to see the crannog (artificial island) up close - the crannog is not visible from all shores.
  • Watch for skylarks and warblers in spring; anglers prize the lake for brown trout.
  • Combine the lake with a walk up nearby hills for views across the Brecon Beacons.

Best Time to Visit Llangorse Lake #

Late spring through early autumn gives the best access for boating and wildlife; winter can be marshy and cold.

Summer
June-August · 12-22°C (54-72°F)
Warmest weather and best conditions for boating and birdwatching.
Spring
March-May · 5-15°C (41-59°F)
Migratory birds arrive and the surrounding marshes green up; still cool in the mornings.
Autumn
September-October · 8-16°C (46-61°F)
Calmer light and fewer visitors; great for photography and fishing.

Weather & Climate near Llangorse Lake #

Climate

Llangorse Lake's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in July) and cold winters (coldest in February). Temperatures range from 1°C to 20°C. Abundant rainfall (1107 mm/year), wettest in January.

Best Time to Visit
JulyJuneAugust
Temperature & Rainfall
Temperature Range
31°
Warmest Month
-11°
Coldest Month
Monthly Conditions

January

January is cold with highs of 7°C and lows of 2°C. The wettest month with heavy rain (126 mm) and mostly overcast skies.

38 Poor

Comfort

Feels Like Cold
C
Temperature
96%
Humidity
Very Humid

Weather

126 mm
Rainfall
3.5 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.2h daylight

February

February is the coolest month with highs of 6°C and lows of 1°C. Regular rainfall (90 mm) and mostly overcast skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
94%
Humidity
Very Humid

Weather

90 mm
Rainfall
3.4 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.8h daylight

March

March is cold with highs of 9°C and lows of 3°C. Regular rainfall (93 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
91%
Humidity
Very Humid

Weather

93 mm
Rainfall
3.5 m/s
Wind
Light Breeze
0.4
UV Index
Low
11.7h daylight

April

April is cold with highs of 11°C and lows of 4°C. Moderate rainfall (68 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
86%
Humidity
Very Humid

Weather

68 mm
Rainfall
3.1 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
13.7h daylight

May

May is cool with highs of 15°C and lows of 7°C. Moderate rainfall (66 mm) and mostly overcast skies.

56 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
15°
84%
Humidity
Very Humid

Weather

66 mm
Rainfall
3.0 m/s
Wind
Light Breeze
1.1
UV Index
High
15.4h daylight

June

June is cool with highs of 17°C and lows of 10°C. Moderate rainfall (70 mm) and mostly overcast skies.

63 Good

Comfort

14°
Feels Like Cool
14°C
Temperature
10° 17°
84%
Humidity
Very Humid

Weather

70 mm
Rainfall
2.7 m/s
Wind
Calm
1.4
UV Index
High
16.3h daylight

July

July is cool with highs of 20°C and lows of 12°C. Moderate rainfall (59 mm) and mostly overcast skies.

67 Good

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 20°
84%
Humidity
Very Humid

Weather

59 mm
Rainfall
2.7 m/s
Wind
Calm
1.3
UV Index
High
15.9h daylight

August

August is cool with highs of 20°C and lows of 12°C. Regular rainfall (85 mm) and mostly overcast skies.

63 Good

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 20°
86%
Humidity
Very Humid

Weather

85 mm
Rainfall
2.5 m/s
Wind
Calm
1.0
UV Index
High
14.4h daylight

September

September is cool with highs of 17°C and lows of 10°C. Regular rainfall (97 mm) and mostly overcast skies.

61 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 17°
88%
Humidity
Very Humid

Weather

97 mm
Rainfall
2.5 m/s
Wind
Calm
0.7
UV Index
Moderate
12.5h daylight

October

October is cool with highs of 13°C and lows of 7°C. Significant rainfall (107 mm) and mostly overcast skies.

51 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
92%
Humidity
Very Humid

Weather

107 mm
Rainfall
2.7 m/s
Wind
Calm
0.3
UV Index
Low
10.5h daylight

November

November is cold with highs of 10°C and lows of 4°C. Significant rainfall (120 mm) and mostly overcast skies.

49 Poor

Comfort

Feels Like Cold
C
Temperature
10°
95%
Humidity
Very Humid

Weather

120 mm
Rainfall
2.7 m/s
Wind
Calm
0.1
UV Index
Low
8.7h daylight

December

December is cold with highs of 8°C and lows of 3°C. The wettest month with heavy rain (126 mm) and mostly overcast skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
96%
Humidity
Very Humid

Weather

126 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.0
UV Index
Low
7.7h daylight

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