In July, Joetsu typically sees daytime highs of 28.0°C and overnight lows around 19.7°C. Compared to the annual average high of 17.1°C, July runs +10.8°C.
July in Joetsu averages a daytime high of 28.0°C and an overnight low of 19.7°C.
July runs +10.8°C compared to Joetsu's annual average high of 17.1°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.0°C and cooler evenings around 19.7°C.