Nephin
Mountain Isolated mountain massif in County Mayo, steep quartzite slopes
Nephin, a prominent mountain in County Mayo’s Erris region, offers long ridge walks, remote peatland landscapes and viewpoints popular with hikers seeking exposed upland terrain.
Nephin is a mountain in County Mayo, in the province of Connacht, Ireland, with a summit elevation of 806 metres. It is one of the county’s most prominent upland features.
Hikers and hillwalkers use routes that cross extensive blanket bog and upland heath to reach the summit; the mountain offers broad views across Mayo when weather permits. The terrain is remote and can be boggy and pathless in places, so routes are typically undertaken by experienced walkers.
Nephin has long formed part of local upland land use, including grazing and turf cutting in surrounding areas, and has featured in regional mapping and place-names for centuries. The mountain stands as a landmark in local geography rather than a site with major built heritage.
The mountain sits in central County Mayo on Ireland’s west coast region, within the island’s upland interior. Nephin is surrounded by other uplands and peatlands characteristic of the Mayo landscape.
- Elevation: Summit elevation is 806 metres, making it one of County Mayo's more prominent peaks.
- Landscape character: The mountain is noted for its flat-topped profile and long, remote ridgelines across blanket bog and heath.
Best Time to Visit Nephin #
Plan visits between May and September for the most reliable hiking conditions and clearer weather.
Weather & Climate near Nephin #
Nephin's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in February). Temperatures range from 1°C to 15°C. Heavy rainfall (2120 mm/year), wettest in January.
January
January is cold with highs of 6°C and lows of 2°C. The wettest month with heavy rain (240 mm), mostly overcast skies, and windy conditions.
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February
February is the coolest month with highs of 6°C and lows of 1°C. Significant rainfall (168 mm), mostly overcast skies, and breezy conditions.
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March
March is cold with highs of 6°C and lows of 1°C. Significant rainfall (190 mm), mostly overcast skies, and breezy conditions.
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April
April is cold with highs of 8°C and lows of 2°C. Significant rainfall (123 mm), mostly overcast skies, and breezy conditions.
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May
May is cold with highs of 11°C and lows of 4°C. Significant rainfall (129 mm), mostly overcast skies, and breezy conditions.
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June
June is cool with highs of 13°C and lows of 7°C. Significant rainfall (118 mm), mostly overcast skies, and breezy conditions.
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July
July is cool with highs of 15°C and lows of 9°C. Significant rainfall (122 mm), mostly overcast skies, and breezy conditions.
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August
August is cool with highs of 15°C and lows of 9°C. Significant rainfall (153 mm), mostly overcast skies, and breezy conditions.
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September
September is cold with highs of 13°C and lows of 7°C. Significant rainfall (183 mm), mostly overcast skies, and breezy conditions.
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October
October is cold with highs of 10°C and lows of 5°C. Heavy rain (225 mm), mostly overcast skies, and breezy conditions.
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November
November is cold with highs of 8°C and lows of 2°C. Heavy rain (233 mm), mostly overcast skies, and breezy conditions.
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December
December is cold with highs of 6°C and lows of 2°C. Heavy rain (236 mm), mostly overcast skies, and breezy conditions.
