August in Niitsu-honchō averages a daily high of 30.7°C. Expect roughly 10.4 wet days totalling 139.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Niitsu-honchō is May–June.
Based on NIIGATA, JA (14.5km), 1995–2024. 20 years of August data.