January in Banda Aceh averages a daily high of 31.4°C with nights around 22.4°C. Expect roughly 4 wet days totalling 36.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Banda Aceh is September–July.
Based on SULTAN ISKANDARMUDA, ID (9.8km), 1995–2024. 17 years of January data.