Cold. 11.0°C in May is cold-water swimming territory — a 4/3 mm full wetsuit, neoprene cap and short, repeated sessions are the safe approach.
Monthly averages set expectations, but the specific beach today depends on wind, swell and recent weather. Check the live value at the top of this page or open the Streedagh live page for full conditions.
Frequently asked questions
What is the average sea temperature at Streedagh in May?
Streedagh averages 11.0°C in May, based on long-run climatology for the Celtic Sea.
Is the sea warm enough to swim at Streedagh in May?
Not without thermal protection — a wetsuit is recommended at 11.0°C.
Do I need a wetsuit at Streedagh in May?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.
