May in Tczew averages a daily high of 17.7°C with nights around 8.4°C. Expect roughly 12.8 wet days totalling 54.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tczew is May–September.
Based on ELBLAG MILEJEWO, PL (43.5km), 1995–2024. 26 years of May data.