June in Skien averages a daily high of 20.8°C with nights around 9.7°C. Expect roughly 14.3 wet days totalling 76.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Skien is June–September.
Based on GVARV NES, NO (30.1km), 1995–2024. 28 years of June data.