In September, Gyeongsan-si typically sees daytime highs of 25.5°C and overnight lows around 15.0°C. Compared to the annual average high of 17.9°C, September runs +7.6°C.
September in Gyeongsan-si averages a daytime high of 25.5°C and an overnight low of 15.0°C.
September runs +7.6°C compared to Gyeongsan-si's annual average high of 17.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 15.0°C.