Swimming in Letterkenny in august 2025: Average sea temperature in august and tide times in august 2025
Average sea temperature in Letterkenny in august 2025.
In august, according to seasonal norms, the sea temperature in Letterkenny is:
Minimum: 57°F
Average: 59°F
Maximum: 61°F
Other useful seasonal weather averages in august:
- Outside temperature: 52°F to 63°F
- Most common weather: "Cloudy"
- The wind blows at 6.2mph
- It rains a total of 3.2in, over 4 day(s).
Should we swim in Letterkenny in august?
No... The water temperature in Letterkenny in august is freezing
You won't be able to swim in Letterkenny in august! The water temperature is freezing, reaching as low as 57°F (and only 61°F at best)! Our advice: if you are going to Letterkenny this month, plan to sightsee and forget the beach!
Note also that in august, the climate is bad with an average outside temperature of 58°F, 3.2in of precipitation (over 4 days) and 95.83 % humidity.
Water and normal seasonal temperatures in Letterkenny in august
| August | |||
| Average sea temperature | 59°F | ||
| Minimum sea temperature | 57°F | ||
| Maximum sea temperature | 61°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 65°F | ||
| Minimum outside temperature | 52°F | ||
| Wind speed | 11.2mph | ||
| Wind temperature | 50°F | ||
| Precipitation | 3.2in | ||
| Number of days of rain | 4 jour(s) (13%) | ||
| Humidity | 96% | ||
| Visibility in kilometers | 7.3km | ||
| Cloud cover | 71% | ||
| Our opinion | freezing swimming |
Chart of the tides in august 2025
Tide times in august 2025 in Letterkenny
Swim elsewhere in Ireland in august
| City | Average T° | Min. T° | Max. T° | Our opinion | Dublin in august | 59°F | 61°F | cold swimming | Cork in august | 62°F | 65°F | cold swimming | Galway in august | 60°F | 63°F | cold swimming | Belmullet in august | 60°F | 62°F | cold swimming | Connemara National Park in august | 60°F | 62°F | cold swimming | Dingle in august | 61°F | 63°F | cold swimming | Dundalk in august | 59°F | 60°F | freezing swimming | Dungloe in august | 59°F | 61°F | freezing swimming | Killybegs in august | 59°F | 61°F | freezing swimming | Achill Island in august | 60°F | 62°F | cold swimming | Cliffs of Moher in august | 61°F | 63°F | cold swimming | Donegal in august | 59°F | 61°F | freezing swimming | Waterford in august | 62°F | 64°F | cold swimming | Wexford in august | 60°F | 62°F | cold swimming | Sligo in august | 59°F | 61°F | cold swimming | Westport in august | 60°F | 62°F | cold swimming |