May in Van averages a daily high of 18.3°C with nights around 8.1°C. Expect roughly 12.4 wet days totalling 48.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Van is June–September.
Based on VAN, TU (7.4km), 1995–2024. 17 years of May data.