January in Thiruvananthapuram is the sunniest month of the year. In January, the weather in Thiruvananthapuram is typically warm. Average daily high temperature in January is about 27 degrees above zero. On average, Thiruvananthapuram has 18 sunny, 7 partly cloudy, 4 rainy, and 2 cloudy days in January. The rains are usually light. January as well as February is considered the most comfortable time to visit Thiruvananthapuram.