May in Belawan averages a daily high of 32°C with nights around 25.1°C. Expect roughly 4.3 wet days totalling 73.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Belawan is November–February.
Based on MEDAN BELAWAN, ID (3.3km), 1995–2024. 19 years of May data.