December in Linz averages a daily high of 3.2°C with nights around -1.5°C. Expect roughly 14.6 wet days totalling 67.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Linz is May–September.
Based on KREMSMUENSTER, AU (30.7km), 1995–2024. 30 years of December data.