It depends. De Haan sits around 16.0°C in June; 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 De Haan live page for full conditions.
Frequently asked questions
What is the average sea temperature at De Haan in June?
De Haan averages 16.0°C in June, based on long-run climatology for the North Sea.
Is the sea warm enough to swim at De Haan in June?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at De Haan in June?
A 2 mm shorty is comfortable for sessions over 30 minutes.