May in Bắc Giang is the windiest month of the year. In May, the weather in Bắc Giang is typically hot. Average daily high temperature in May is about 30 degrees above zero. On average, Bắc Giang has 28 rainy and 3 sunny days in May. The rains are usually heavy. May as well as June, July, August, and September is considered the most uncomfortable time to visit Bắc Giang.