In April, Niihama typically sees daytime highs of 15.8°C and overnight lows around 7.5°C. Compared to the annual average high of 17.0°C, April runs -1.2°C.
April in Niihama averages a daytime high of 15.8°C and an overnight low of 7.5°C.
April runs -1.2°C compared to Niihama's annual average high of 17.0°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 15.8°C and cooler evenings around 7.5°C.