June in Słupsk averages a daily high of 19.5°C with nights around 10.6°C. Expect roughly 10 wet days totalling 41.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Słupsk is June–August.
Based on LEBA, PL (45.5km), 1995–2024. 30 years of June data.