December in Luleå averages a daily high of -2.9°C with nights around -9.5°C. Expect roughly 15.8 wet days totalling 60.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Luleå is June–August.
Based on LULEA BERGNASET, SW (2.1km), 1995–2024. 10 years of December data.