In August, Nagaoka typically sees daytime highs of 31.1°C and overnight lows around 21.1°C. Compared to the annual average high of 17.7°C, August runs +13.4°C.
August in Nagaoka averages a daytime high of 31.1°C and an overnight low of 21.1°C.
August runs +13.4°C compared to Nagaoka's annual average high of 17.7°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.1°C and cooler evenings around 21.1°C.