Can you swim at Sennen Cove in August? — 17.0°C water
Yes, but expect a fresh dip
Average sea · August
17.0°C
Live water now
…
Recommended wetsuit
3/2mm fullsuit
mild
It depends. Sennen Cove sits around 17.0°C in August; confident swimmers will be fine, casual bathers may prefer short sessions.
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 Sennen Cove live page for full conditions.
Frequently asked questions
What is the average sea temperature at Sennen Cove in August?
Sennen Cove averages 17.0°C in August, based on long-run climatology for the Celtic Sea.
Is the sea warm enough to swim at Sennen Cove in August?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Sennen Cove in August?
A 2 mm shorty is comfortable for sessions over 30 minutes.
