December in Sibolga averages a daily high of 31.4°C with nights around 21.9°C. Expect roughly 9.5 wet days totalling 98.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sibolga is December–July.
Based on SIBOLGA PINANGSORI, ID (24km), 1995–2024. 22 years of December data.