Overview
- The warm, dry spell began late last week and has continued through the Pinkster weekend under a hogedrukgebied that is keeping skies clear and temperatures commonly in the mid-20s with local peaks near 29–30°C.
- Weekend readings produced the first official 'zomerse dag' of the year, with De Bilt reaching 25°C and inland stations such as Deelen recording about 29.8°C.
- Beaches, lakes, pools and festivals are seeing heavy crowds and organisers have added staff, extra water points, shade and sunscreen stations to reduce heat- and crowd-related risks.
- Authorities and rescue services warn that open water remains cold (North Sea and many lakes around 14–15°C), raising hypothermia and shock risks for swimmers, and they advise caution where blue-green algae or contamination are reported and recommend sunscreen because UV can burn skin quickly.
- Forecasts keep the high-pressure pattern into early next week with warm, sunny days before a likely midweek cooling when winds turn north, and meteorologists note a chance of noctilucent night clouds on clear evenings.