In June, Joetsu typically sees daytime highs of 24.0°C and overnight lows around 15.2°C. Compared to the annual average high of 17.1°C, June runs +6.9°C.
June in Joetsu averages a daytime high of 24.0°C and an overnight low of 15.2°C.
June runs +6.9°C compared to Joetsu's annual average high of 17.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.0°C and cooler evenings around 15.2°C.