June in Kalutara is the windiest month of the year. In June, the weather in Kalutara is typically hot. Average daily high temperature in June is about 28 degrees above zero. On average, Kalutara has 29 rainy and 1 cloudy day in June. The rains are usually heavy. June as well as March, April, May, and July is considered the most uncomfortable time to visit Kalutara.