In April, Nagaoka typically sees daytime highs of 17.2°C and overnight lows around 5.3°C. Compared to the annual average high of 17.7°C, April runs -0.5°C.
April in Nagaoka averages a daytime high of 17.2°C and an overnight low of 5.3°C.
April runs -0.5°C compared to Nagaoka's annual average high of 17.7°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 17.2°C and cooler evenings around 5.3°C.