Can you swim at Caswell Bay in March? — 8.0°C water
Cold — wetsuit recommended
Average sea · March
8.0°C
Live water now
…
Recommended wetsuit
6/5/4mm hooded fullsuit or drysuit
cold
Cold. 8.0°C in March 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 Caswell Bay live page for full conditions.
Frequently asked questions
What is the average sea temperature at Caswell Bay in March?
Caswell Bay averages 8.0°C in March, based on long-run climatology for the Bristol Channel.
Is the sea warm enough to swim at Caswell Bay in March?
Not without thermal protection — a wetsuit is recommended at 8.0°C.
Do I need a wetsuit at Caswell Bay in March?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.
