December in Sumbawa Besar averages a daily high of 32°C. Expect roughly 5.7 wet days totalling 69.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sumbawa Besar is December–September.
Based on SUMBAWA BESAR, ID (1km), 1995–2024. 18 years of December data.