In September, Hongwon typically sees daytime highs of 21.5°C and overnight lows around 10.9°C. Compared to the annual average high of 13.0°C, September runs +8.5°C.
September in Hongwon averages a daytime high of 21.5°C and an overnight low of 10.9°C.
September runs +8.5°C compared to Hongwon's annual average high of 13.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 21.5°C and cooler evenings around 10.9°C.