May in Bocas del Toro is the cloudiest month of the year. In May, the weather in Bocas del Toro is typically warm. Average daily high temperature in May is about 23 degrees above zero. On average, Bocas del Toro has 30 rainy and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Bocas del Toro.