In August, Iwamizawa typically sees daytime highs of 24.8°C and overnight lows around 16.3°C. Compared to the annual average high of 11.4°C, August runs +13.4°C.
August in Iwamizawa averages a daytime high of 24.8°C and an overnight low of 16.3°C.
August runs +13.4°C compared to Iwamizawa's annual average high of 11.4°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 24.8°C and cooler evenings around 16.3°C.