NephinNephin at a Glance
About Nephin
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.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | 2° - 6° | -2° | 240 mm | overcast | 91% | 10.0 m/s | 0.0 low | 7.7h |
| February | Poor | 1° - 6° | -2° | 168 mm | overcast | 90% | 9.7 m/s | 0.1 low | 9.5h |
| March | Poor | 1° - 6° | -2° | 190 mm | overcast | 88% | 9.3 m/s | 0.3 low | 11.7h |
| April | Poor | 2° - 8° | 0° | 123 mm | overcast | 86% | 7.8 m/s | 0.7 moderate | 13.9h |
| May | Poor | 4° - 11° | 4° | 129 mm | overcast | 84% | 7.5 m/s | 1.1 high | 15.8h |
| June | Poor | 7° - 13° | 10° | 118 mm | overcast | 84% | 7.0 m/s | 1.3 high | 16.9h |
| July | Poor | 9° - 15° | 12° | 122 mm | overcast | 86% | 6.7 m/s | 1.2 high | 16.4h |
| August | Poor | 9° - 15° | 12° | 153 mm | overcast | 87% | 6.8 m/s | 0.9 moderate | 14.7h |
| September | Poor | 7° - 13° | 7° | 183 mm | overcast | 87% | 7.6 m/s | 0.6 moderate | 12.5h |
| October | Poor | 5° - 10° | 3° | 225 mm | overcast | 89% | 8.6 m/s | 0.2 low | 10.3h |
| November | Poor | 3° - 8° | 0° | 233 mm | overcast | 91% | 9.0 m/s | 0.1 low | 8.3h |
| December | Poor | 2° - 6° | -1° | 236 mm | overcast | 92% | 9.1 m/s | 0.0 low | 7.1h |