December in Longtan averages a daily high of 9.8°C with nights around 3°C. Expect roughly 8.3 wet days totalling 21.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Longtan is September.
Based on YOUYANG, CH (21km), 1995–2024. 26 years of December data.