Letterkenny, Ulster Climate
Ireland
Pop. 19,274 Elev. 8 m / 26 ft
TZ: Europe/Dublin (UTC+1) ·
Letterkenny has a mild, temperate climate year-round, with temperatures ranging from 38°F (3°C) in January to 66°F (19°C) in August. Rain falls on about 87 days per year (46.0 in / 1168 mm total), with 3 in (80 mm) of annual snowfall. The city averages 35 sunny days per year and around 32 thunderstorm days. Ocean water temperatures reach 62°F (17°C) in summer.
| Temperature | 19°C (66°F) high | 3°C (38°F) low |
| Feels like | 1°C (34°F) low | |
| Rain | 87 days | 1168 mm (46.0 in) /yr |
| Snow | 0 days | 80 mm (3.1 in) /yr |
| Sky | 35 sunny | 32 stormy |
| Wind | 2.2 m/s (4.9 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Jul, Aug
Sky & Air by Month
Cloud cover (%)
75
Jan 74
Feb 77
Mar 59
Apr 56
May 81
Jun 81
Jul 76
Aug 80
Sep 86
Oct 78
Nov 74
Dec Humidity (%)
86
Jan 82
Feb 79
Mar 73
Apr 73
May 80
Jun 82
Jul 82
Aug 83
Sep 85
Oct 86
Nov 88
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 39 km City of Derry Airport (LDY)
Ski resort 217 km Ski Club Of Ireland
National park 21 km Páirc Naisiúnta Ghleann Bheatha - Glenveagh National Park
Hospital 2 km Letterkenny University Hospital
Hiking trail 24 km Ards Forest - Green Route
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 7°C 45°F | 3°C 38°F | 55 mm 2.1 in | 56 mm2.2 in | 2 |
| February | 8°C 47°F | 4°C 40°F | 97 mm 3.8 in | 19 mm0.8 in | 2 |
| March | 11°C 52°F | 5°C 40°F | 36 mm 1.4 in | — | 2 |
| April | 14°C 58°F | 6°C 44°F | 99 mm 3.9 in | — | 9 |
| May | 16°C 61°F | 8°C 46°F | 70 mm 2.8 in | — | 11 |
| June | 17°C 62°F | 11°C 52°F | 129 mm 5.1 in | — | 0 |
| July | 18°C 65°F | 13°C 55°F | 82 mm 3.2 in | — | 2 |
| August | 19°C 66°F | 13°C 55°F | 84 mm 3.3 in | — | 2 |
| September | 15°C 59°F | 10°C 50°F | 133 mm 5.2 in | — | 1 |
| October | 12°C 54°F | 9°C 49°F | 149 mm 5.9 in | — | 0 |
| November | 10°C 50°F | 6°C 43°F | 144 mm 5.7 in | 5 mm0.2 in | 0 |
| December | 8°C 47°F | 5°C 40°F | 90 mm 3.5 in | — | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 2 | 0 |
| February | 2 | 3 |
| March | 2 | 1 |
| April | 9 | 1 |
| May | 11 | 4 |
| June | 0 | 4 |
| July | 2 | 2 |
| August | 2 | 3 |
| September | 1 | 7 |
| October | 0 | 4 |
| November | 0 | 3 |
| December | 4 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 10°C 49°F | 4°C 40°F |
| February | 8°C 47°F | 5°C 40°F |
| March | 9°C 48°F | 7°C 44°F |
| April | 11°C 51°F | 10°C 49°F |
| May | 13°C 55°F | 13°C 56°F |
| June | 15°C 59°F | 14°C 58°F |
| July | 16°C 61°F | 16°C 61°F |
| August | 17°C 62°F | 16°C 61°F |
| September | 16°C 61°F | 12°C 54°F |
| October | 14°C 57°F | 10°C 51°F |
| November | 12°C 54°F | 7°C 45°F |
| December | 10°C 51°F | 5°C 42°F |