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July in Iwamizawa averages a daily high of 25.8°C. Expect roughly 10.1 wet days totalling 105.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Iwamizawa is June–September.
Based on IWAMIZAWA, JA (2.6km), 1995–2024. 28 years of July data.
See all twelve months for Iwamizawa →