January in Thiruvananthapuram is the sunniest month of the year. In January, the weather in Thiruvananthapuram is typically hot. Average daily high temperature in January is about 29 degrees above zero. On average, Thiruvananthapuram has 15 sunny, 12 partly cloudy, and 4 rainy days in January. The rains are usually light. January as well as February is considered the most comfortable time to visit Thiruvananthapuram.