August in Nakatsu averages a daily high of 33.6°C. Expect roughly 12.1 wet days totalling 247.9mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Nakatsu is April–May.
Based on HITA, JA (39.2km), 1995–2024. 25 years of August data.