July in Ulan Bator is the warmest month of the year. In July, the weather in Ulan Bator is typically warm. Average daily high temperature in July is about 20 degrees above zero. On average, Ulan Bator has 14 partly cloudy, 11 sunny, 3 rainy, and 3 cloudy days in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Ulan Bator.