January in Toamasina is the rainiest and the warmest month of the year. In January, the weather in Toamasina is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Toamasina has 25 rainy, 5 sunny, and 1 cloudy day in January. The rains are usually heavy. January as well as February and March is considered the most uncomfortable time to visit Toamasina.