August in Hakuba is the warmest month of the year. In August, the weather in Hakuba is typically warm. Average daily high temperature in August is about 25 degrees above zero. On average, Hakuba has 25 rainy, 4 sunny, and 2 partly cloudy days in August. The rains are usually heavy. August as well as March, April, May, and June is considered the most uncomfortable time to visit Hakuba.