May in Banda Aceh averages a daily high of 33.3°C with nights around 23.5°C. Expect roughly 4 wet days totalling 18.1mm. 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. 19 years of May data.