canIswim

What wetsuit do you need in Ireland?

The one suit that covers most of the swimming season, for 14 coastal cities in Ireland.

City Coldest Warmest One suit for the season
Dublin 8.3°C Feb 15.8°C Aug 3/2 mm full suit
Waterford 9.2°C Feb 16.0°C Aug 4/3 mm full suit
Drogheda 7.6°C Feb 15.9°C Aug 5/4 mm full suit
Dundalk 7.6°C Feb 15.9°C Aug 5/4 mm full suit
Bray 8.7°C Feb 15.4°C Aug 3/2 mm full suit
Balbriggan 8.2°C Feb 15.8°C Aug 3/2 mm full suit
Sligo 8.5°C Feb 16.1°C Aug 4/3 mm full suit
Carrigaline 9.6°C Feb 16.5°C Aug 4/3 mm full suit
Arklow 8.3°C Feb 16.0°C Aug 5/4 mm full suit
Wicklow 8.3°C Feb 16.0°C Aug 5/4 mm full suit
Midleton 9.4°C Feb 16.3°C Aug 4/3 mm full suit
Gorey 8.7°C Feb 15.9°C Aug 3/2 mm full suit
Youghal 9.4°C Feb 16.3°C Aug 4/3 mm full suit
Dungarvan 9.2°C Feb 16.0°C Aug 4/3 mm full suit

Thicknesses above are for swimming. Surfing the same water wants a step more — most of a session is spent sitting still in the wind rather than moving and immersed. Each city page gives both, along with when you need boots, gloves and a hood.

Boots below 14°C, gloves below 12°C, a hood below 10°C. Where the numbers come from