In September, Iwo typically sees daytime highs of 29.0°C and overnight lows around 21.3°C. Compared to the annual average high of 31.4°C, September runs -2.4°C.
September in Iwo averages a daytime high of 29.0°C and an overnight low of 21.3°C.
September runs -2.4°C compared to Iwo's annual average high of 31.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 29.0°C and cooler evenings around 21.3°C.