August in Hamamatsu averages a daily high of 32°C. Expect roughly 9.9 wet days totalling 151.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hamamatsu is April–June.
Based on HAMAMATSU, JA (2.4km), 1995–2024. 25 years of August data.