In April, Joetsu typically sees daytime highs of 15.8°C and overnight lows around 4.7°C. Compared to the annual average high of 17.1°C, April runs -1.4°C.
April in Joetsu averages a daytime high of 15.8°C and an overnight low of 4.7°C.
April runs -1.4°C compared to Joetsu's annual average high of 17.1°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 15.8°C and cooler evenings around 4.7°C.