June in Udon Thani is the cloudiest month of the year. In June, the weather in Udon Thani is typically hot. Average daily high temperature in June is about 33 degrees above zero. On average, Udon Thani has 24 rainy, 5 cloudy, and 1 partly cloudy day in June. The rains are usually heavy. June as well as May, July, August, and September is considered the most uncomfortable time to visit Udon Thani.