In September, Icheon-si typically sees daytime highs of 24.9°C and overnight lows around 14.0°C. Compared to the annual average high of 16.3°C, September runs +8.5°C.
September in Icheon-si averages a daytime high of 24.9°C and an overnight low of 14.0°C.
September runs +8.5°C compared to Icheon-si's annual average high of 16.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.9°C and cooler evenings around 14.0°C.