December in Pekanbaru averages a daily high of 31.7°C with nights around 23.1°C. Expect roughly 8.3 wet days totalling 82.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pekanbaru is June–September.
Based on SULTAN SYARIF KASIM II, ID (6.2km), 1995–2024. 13 years of December data.