May in Velsen-Zuid averages a daily high of 16.7°C with nights around 8.2°C. Expect roughly 11 wet days totalling 50.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Velsen-Zuid is June–September.
Based on WIJK AAN ZEE, NL (6km), 1995–2024. 24 years of May data.