October in Thanjavur is the rainiest month of the year. In October, the weather in Thanjavur is typically hot. Average daily high temperature in October is about 30 degrees above zero. On average, Thanjavur has 28 rainy, 2 sunny, and 1 cloudy day in October. The rains are usually heavy. October as well as August, September, and November is considered the most uncomfortable time to visit Thanjavur.