December in Leeuwarden averages a daily high of 6.2°C with nights around 1.4°C. Expect roughly 18 wet days totalling 81.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Leeuwarden is June–September.
Based on LEEUWARDEN, NL (4.5km), 1995–2024. 30 years of December data.