June in To-shima is the rainiest and the cloudiest month of the year. In June, the weather in To-shima is typically warm. Average daily high temperature in June is about 22 degrees above zero. On average, To-shima has 18 rainy, 9 cloudy, and 3 sunny days in June. The rains are usually heavy. June as well as January, February, March, and November is considered the most uncomfortable time to visit To-shima.