Swimming in Letterkenny in october 2025: Average sea temperature in october and tide times in october 2025
Average sea temperature in Letterkenny in october 2025.
In october, according to seasonal norms, the sea temperature in Letterkenny is:
Minimum: 54°F
Average: 56°F
Maximum: 59°F
Other useful seasonal weather averages in october:
- Outside temperature: 46°F to 55°F
- Most common weather: "Cloudy"
- The wind blows at 3.7mph
- It rains a total of 3.1in, over 5 day(s).
Should we swim in Letterkenny in october?
No... The water temperature in Letterkenny in october is freezing
You won't be able to swim in Letterkenny in october! The water temperature is freezing, reaching as low as 54°F (and only 59°F at best)! Our advice: if you are going to Letterkenny this month, plan to sightsee and forget the beach!
Note also that in october, the climate is bad with an average outside temperature of 51°F, 3.1in of precipitation (over 5 days) and 93.59 % humidity.
Water and normal seasonal temperatures in Letterkenny in october
| October | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 59°F | ||
| Average outside temperature | 52°F | ||
| Maximum outside temperature | 56°F | ||
| Minimum outside temperature | 47°F | ||
| Wind speed | 12.4mph | ||
| Wind temperature | 43°F | ||
| Precipitation | 3.1in | ||
| Number of days of rain | 5 jour(s) (15%) | ||
| Humidity | 94% | ||
| Visibility in kilometers | 7.97km | ||
| Cloud cover | 67% | ||
| Our opinion | freezing swimming |
Chart of the tides in october 2025
Tide times in october 2025 in Letterkenny
Swim elsewhere in Ireland in october
| City | Average T° | Min. T° | Max. T° | Our opinion | Dublin in october | 58°F | 60°F | freezing swimming | Cork in october | 58°F | 61°F | freezing swimming | Galway in october | 57°F | 60°F | freezing swimming | Belmullet in october | 57°F | 60°F | freezing swimming | Connemara National Park in october | 57°F | 60°F | freezing swimming | Dingle in october | 58°F | 60°F | freezing swimming | Dundalk in october | 58°F | 59°F | freezing swimming | Dungloe in october | 56°F | 59°F | freezing swimming | Killybegs in october | 56°F | 59°F | freezing swimming | Achill Island in october | 57°F | 60°F | freezing swimming | Cliffs of Moher in october | 58°F | 60°F | freezing swimming | Donegal in october | 56°F | 58°F | freezing swimming | Waterford in october | 58°F | 61°F | freezing swimming | Wexford in october | 58°F | 60°F | freezing swimming | Sligo in october | 56°F | 59°F | freezing swimming | Westport in october | 57°F | 60°F | freezing swimming |