May in Thiruvananthapuram is the cloudiest month of the year. In May, the weather in Thiruvananthapuram is typically hot. Average daily high temperature in May is about 29 degrees above zero. On average, Thiruvananthapuram has 27 rainy and 4 cloudy days in May. The rains are usually heavy. May as well as April, June, July, and August is considered the most uncomfortable time to visit Thiruvananthapuram.