August in Goa is the warmest month of the year. In August, the weather in Goa is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Goa has 23 rainy, 6 sunny, and 2 partly cloudy days in August. The rains are usually heavy. August as well as April, May, June, and July is considered the most uncomfortable time to visit Goa.