May in Rahim Yar Khan is the windiest and the sunniest month of the year. In May, the weather in Rahim Yar Khan is typically hot. Average daily high temperature in May is about 43 degrees above zero. On average, Rahim Yar Khan has 31 sunny days in May. May as well as June, July, and August is considered the most uncomfortable time to visit Rahim Yar Khan.