August in Macau is the hottest month of the year. In August, the weather in Macau is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Macau has 26 rainy, 4 sunny, and 1 partly cloudy day in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Macau.