April in Sandakan is the sunniest month of the year. In April, the weather in Sandakan is typically hot. Average daily high temperature in April is about 30 degrees above zero. On average, Sandakan has 24 rainy, 5 sunny, and 1 partly cloudy day in April. The rains are usually heavy. April as well as January, February, March, and May is considered the most uncomfortable time to visit Sandakan.