August in Rahim Yar Khan is the rainiest month of the year. In August, the weather in Rahim Yar Khan is typically hot. Average daily high temperature in August is about 39 degrees above zero. On average, Rahim Yar Khan has 19 sunny, 11 partly cloudy, and 1 rainy day in August. The rains are usually light. August as well as May, June, and July is considered the most uncomfortable time to visit Rahim Yar Khan.