October in Coimbatore is the rainiest month of the year. In October, the weather in Coimbatore is typically warm. Average daily high temperature in October is about 26 degrees above zero. On average, Coimbatore has 23 rainy, 7 cloudy, and 1 sunny day in October. The rains are usually heavy. October as well as May and November is considered the most uncomfortable time to visit Coimbatore.