December in Bremerhaven averages a daily high of 5.4°C with nights around 1.5°C. Expect roughly 17.6 wet days totalling 72mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Bremerhaven is May–September.
Based on BREMERHAVEN, GM (2.1km), 1995–2024. 30 years of December data.