December in Toamasina averages a daily high of 30.8°C with nights around 22°C. Expect roughly 20.3 wet days totalling 332.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Toamasina is May–November.
Based on TOAMASINA, MA (3.6km), 1995–2024. 25 years of December data.