Ireland: where to swim in February?
Ireland, in February: the sea is at 9.4 °C on average along the coast, from 8.5 °C to 10.2 °C depending on the spot. Where the water is warmest (10.2 °C), it is cold. You can swim, but the cold bites quickly: plan a short swim, or wear a wetsuit.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 9.9 °C | 9.2 °C – 10.4 °C | cold |
| February | 9.4 °C | 8.5 °C – 10.2 °C | cold |
| March | 9.4 °C | 8.5 °C – 10.2 °C | cold |
| April | 10.0 °C | 9.2 °C – 10.6 °C | cold |
| May | 11.5 °C | 10.8 °C – 12.1 °C | cold |
| June | 13.6 °C | 12.9 °C – 14.5 °C | cold |
| July | 15.2 °C | 14.2 °C – 16.4 °C | cool |
| August | 15.8 °C | 14.9 °C – 16.5 °C | cool |
| September | 15.0 °C | 14.2 °C – 15.7 °C | cool |
| October | 13.7 °C | 12.9 °C – 14.3 °C | cold |
| November | 12.2 °C | 11.6 °C – 12.8 °C | cold |
| December | 10.8 °C | 10.4 °C – 11.2 °C | cold |
Compared with January, the water cools down by 0.5 °C in February. The warmest month: August (15.8 °C). The coldest: February (9.4 °C).
Nearby, in February
- United Kingdom 7.9 °C · very cold
- Netherlands 6.1 °C · very cold
- France 11.6 °C · cold
- Denmark 3.9 °C · very cold
- Germany 3.6 °C · very cold
- Portugal 14.9 °C · cool
And right now?
For the temperature measured right now, station by station and to the hour: Ireland: water temperature
Frequently asked questions
What is the sea temperature in February?
Ireland, in February: 9.4 °C on average along the coast, from 8.5 °C in the coolest waters to 10.2 °C in the warmest (average of the years 2011 to 2025).
Can you swim in February?
Where the water is warmest (10.2 °C), it is cold. You can swim, but the cold bites quickly: plan a short swim, or wear a wetsuit.
What is the best month for swimming?
The water is warmest in August (15.8 °C on average) and coldest in February (9.4 °C). Even where it is warmest, the water never reaches 20 °C in any month; the three warmest months are: August, July, September.
Where is the water warmest in February?
The warmest in February: United Kingdom (7.9 °C), Netherlands (6.1 °C), France (11.6 °C). The coolest: Portugal (14.9 °C).
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.