December in Haninge averages a daily high of 2.4°C with nights around -2.5°C. Expect roughly 15.8 wet days totalling 54.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Haninge is June–August.
Based on HARSFJARDEN, SW (11km), 1995–2024. 25 years of December data.