Lough Beagh

Lake Glacial lake amid rugged mountains in Donegal

A mountain lake in County Donegal within the Glenveagh area, popular with anglers and walkers using nearby trails through upland scenery.

Main image

Lough Beagh is a lake in County Donegal in northwest Ireland, situated in a steep-sided glacial valley. It forms part of the upland landscape of the Derryveagh Mountains.

The lake is noted for its remote, mountainous setting and is used for hillwalking, nature watching, and angling by visitors and locals. The shoreline is generally rugged with rock and heathland.

Lough Beagh is a glacial lake formed during the last Ice Age and sits in a classic U-shaped valley carved by ice. The lake and surrounding land feature in the estate and conservation history of the Glenveagh area.

The lake lies in the interior of County Donegal, within Glenveagh National Park and the Derryveagh Mountains, in northwestern Ireland.

  • Within Glenveagh National Park: Located inside Glenveagh National Park, offering direct access to park trails and mountain scenery.
Lough Beagh
Lough Beagh, County Donegal, Ulster, Ireland
55.0383, -7.9717

How to Get to Lough Beagh #

Access is by narrow local roads from nearby towns such as Letterkenny; drive routes use regional roads off the N56. Parking is limited and trails can be boggy - sturdy footwear and local maps are recommended.

Tips for Visiting Lough Beagh #

  • Bring binoculars for birdwatching - the area hosts choughs and raptors.
  • Park at the designated car parks on the N56 and walk the marked trails to preserve fragile bogland.
  • Visit midweek outside the angling season to avoid local fishermen groups.

Best Time to Visit Lough Beagh #

Best time: late spring to early autumn for trail access and clearer weather.

Summer
June-August · 10-18°C
Warmest, longest days; ideal for hiking the surrounding Errigal and Blue Stack ridges.
Autumn
September-October · 6-14°C
Turnover of color and fewer visitors; good for photography but weather is more changeable.
Winter
November-February · -2-8°C
Cold and frequently wet; paths can be boggy and wind-exposed.

Weather & Climate near Lough Beagh #

Climate

Lough Beagh's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in January). Temperatures range from 2°C to 17°C. Abundant rainfall (1779 mm/year), wettest in October.

Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
26°
Warmest Month
-3°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 7°C and lows of 2°C. Significant rainfall (196 mm), mostly overcast skies, and breezy conditions.

34 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

196 mm
Rainfall
6.3 m/s
Wind
Breezy
0.0
UV Index
Low
7.6h daylight

February

February is cold with highs of 7°C and lows of 2°C. Significant rainfall (140 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
89%
Humidity
Very Humid

Weather

140 mm
Rainfall
6.2 m/s
Wind
Breezy
0.1
UV Index
Low
9.4h daylight

March

March is cold with highs of 9°C and lows of 3°C. Significant rainfall (148 mm), mostly overcast skies, and breezy conditions.

44 Poor

Comfort

Feels Like Cold
C
Temperature
88%
Humidity
Very Humid

Weather

148 mm
Rainfall
6.0 m/s
Wind
Breezy
0.3
UV Index
Low
11.7h daylight

April

April is cold with highs of 11°C and lows of 5°C. Significant rainfall (105 mm) and mostly overcast skies.

50 Acceptable

Comfort

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

Weather

105 mm
Rainfall
5.1 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
14.0h daylight

May

May is cool with highs of 14°C and lows of 7°C. Regular rainfall (95 mm) and mostly overcast skies.

54 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
14°
85%
Humidity
Very Humid

Weather

95 mm
Rainfall
4.8 m/s
Wind
Light Breeze
1.0
UV Index
High
16.0h daylight

June

June is cool with highs of 16°C and lows of 9°C. Regular rainfall (99 mm) and mostly overcast skies.

60 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
16°
85%
Humidity
Very Humid

Weather

99 mm
Rainfall
4.7 m/s
Wind
Light Breeze
1.2
UV Index
High
17.1h daylight

July

July is cool with highs of 17°C and lows of 12°C. Significant rainfall (126 mm) and mostly overcast skies.

56 Acceptable

Comfort

14°
Feels Like Cool
14°C
Temperature
12° 17°
86%
Humidity
Very Humid

Weather

126 mm
Rainfall
4.4 m/s
Wind
Light Breeze
1.2
UV Index
High
16.6h daylight

August

August is cool with highs of 17°C and lows of 11°C. Significant rainfall (138 mm) and mostly overcast skies.

56 Acceptable

Comfort

14°
Feels Like Cool
14°C
Temperature
11° 17°
87%
Humidity
Very Humid

Weather

138 mm
Rainfall
4.4 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
14.8h daylight

September

September is cool with highs of 16°C and lows of 10°C. Significant rainfall (159 mm) and mostly overcast skies.

54 Acceptable

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 16°
88%
Humidity
Very Humid

Weather

159 mm
Rainfall
4.9 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
12.6h daylight

October

October is cool with highs of 13°C and lows of 8°C. The wettest month with heavy rain (198 mm) and mostly overcast skies.

46 Poor

Comfort

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

Weather

198 mm
Rainfall
5.4 m/s
Wind
Light Breeze
0.2
UV Index
Low
10.3h daylight

November

November is cold with highs of 10°C and lows of 5°C. Significant rainfall (188 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
10°
89%
Humidity
Very Humid

Weather

188 mm
Rainfall
5.6 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.1h daylight

December

December is cold with highs of 8°C and lows of 4°C. Significant rainfall (187 mm) and mostly overcast skies.

36 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

187 mm
Rainfall
5.7 m/s
Wind
Light Breeze
0.0
UV Index
Low
6.9h daylight

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