August in Rahim Yar Khan is the rainiest and the cloudiest month of the year. In August, the weather in Rahim Yar Khan is typically hot. Average daily high temperature in August is about 37 degrees above zero. On average, Rahim Yar Khan has 17 sunny, 7 rainy, 6 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as May, June, and July is considered the most uncomfortable time to visit Rahim Yar Khan.