Tonelagee Mountain

Mountain in Wicklow Mountains, popular hiking destination

A broad peak in the Wicklow Mountains, Tonelagee rewards hikers with open ridges, peat hags and views over Lough Ouler; walkers use marked trails on the Lugnaquilla massif and often combine the climb with nearby Glendalough.

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Main image

Tonelagee at a Glance#

Address: Tonelagee (Tóin le Gaoith), Wicklow Mountains, Leinster, Ireland (approx. 53.05426°N, -6.38258°W)

Hours: Public access (no formal hours)

Admission: Free (public mountain; no entry fee)

About Tonelagee#

Tonelagee is a mountain in the Wicklow Mountains of eastern Ireland with a summit at about 817 metres above sea level, making it one of the range’s higher peaks. The mountain is popular with hillwalkers for accessible ridgelines and panoramic summit views.

Routes to Tonelagee commonly approach via corrie lakes and mountain tracks, with the lake Lough Ouler lying beneath the northern face and forming an attractive feature on standard circuits. The summit is a broad plateau marked by cairns and offers wide views over the Wicklow uplands and, on clear days, toward the Irish Sea.

Weather in the Wicklow Mountains can change rapidly and paths can be boggy in places, so walkers should be prepared with suitable footwear, maps, and navigation equipment. Access is typically from nearby valley roads and village trailheads in County Wicklow.

  • Elevation and popularity: Summit elevation is 817 metres, making it one of the higher peaks in the Wicklow Mountains and a frequent objective for day hikers from Dublin and the surrounding counties.

What to See#

  • Lough Ouler: A corrie lake known as Lough Ouler sits below the mountain’s northern escarpment and is a common turnaround point for popular walking routes.
  • Summit plateau and views: The summit plateau and cairn offer wide-ranging views over the Wicklow Mountains, including nearby peaks such as Lugnaquilla and the Wicklow uplands to the east and north.

How to Get to Tonelagee#

Access routes begin from Glenmalure or the scenic R759 (Military Road) area. The nearest larger town is Wicklow or Laragh; local bus services to Glendalough or Laragh operate seasonally, from which taxis or local walks connect to trailheads.

Tips for Visiting Tonelagee#

  • Start from the Glenmalure valley or the Carrickmines side depending on desired routes - some approaches are steep but direct.
  • Bring windproof layers - Wicklow summits can be exposed and changeable even in summer.
  • For a classic route, include the Easternmost summit at 817 m and aim for clear days for the best views toward Dublin and the Wicklow massif.

Best Time to Visit Tonelagee#

Summer and shoulder seasons are best for hillwalking; check weather forecasts and route conditions before planning.

Summer
June-August · 10-18°C
Long days and usually the warmest weather; good visibility and popular with hikers.
Spring/Autumn
April-May, September-October · 6-15°C
Quieter on the trails and good conditions for hillwalking; expect boggy patches after rain.
Winter
November-March · -2-7°C
Cold, potentially snowy or icy; only for experienced walkers with proper kit.

Weather & Climate near Tonelagee#

Climate

Tonelagee's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in February). Temperatures range from 0°C to 16°C. Abundant rainfall (1899 mm/year), wettest in January.

Air Quality: AQI 25 Good
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
24°
Warmest Month
-4°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor 0° - 5° -3° 216 mm overcast 92% 8.5 m/s 0.0 low 7.9h
February Poor 1° - 5° -3° 161 mm overcast 91% 8.1 m/s 0.2 low 9.6h
March Poor 1° - 6° -2° 161 mm overcast 89% 7.8 m/s 0.4 low 11.7h
April Poor 1° - 8° 0° 122 mm overcast 87% 6.6 m/s 0.8 moderate 13.8h
May Poor 4° - 11° 4° 131 mm overcast 85% 6.2 m/s 1.2 high 15.7h
June Acceptable 7° - 14° 10° 108 mm overcast 85% 5.6 m/s 1.5 high 16.7h
July Acceptable 9° - 16° 12° 106 mm overcast 86% 5.4 m/s 1.3 high 16.2h
August Acceptable 9° - 16° 12° 137 mm overcast 87% 5.4 m/s 1.1 high 14.6h
September Poor 7° - 13° 7° 161 mm overcast 88% 6.1 m/s 0.7 moderate 12.5h
October Poor 4° - 10° 3° 193 mm overcast 89% 7.1 m/s 0.3 low 10.4h
November Poor 2° - 7° -1° 190 mm overcast 91% 7.6 m/s 0.1 low 8.4h
December Poor 1° - 6° -2° 213 mm overcast 92% 7.8 m/s 0.0 low 7.3h

Nearby Attractions to Tonelagee#