It depends. Kathisma sits around 17.0°C in April; 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 Kathisma live page for full conditions.
Best months to swim
June · July · August · September · October
Frequently asked questions
What is the average sea temperature at Kathisma in April?
Kathisma averages 17.0°C in April, based on long-run climatology for the Ionian Sea.
Is the sea warm enough to swim at Kathisma in April?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Kathisma in April?
A 2 mm shorty is comfortable for sessions over 30 minutes.
