In July, Niihama typically sees daytime highs of 27.2°C and overnight lows around 21.1°C. Compared to the annual average high of 17.0°C, July runs +10.2°C.
July in Niihama averages a daytime high of 27.2°C and an overnight low of 21.1°C.
July runs +10.2°C compared to Niihama's annual average high of 17.0°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 27.2°C and cooler evenings around 21.1°C.