In September, Suwon-si typically sees daytime highs of 24.7°C and overnight lows around 14.7°C. Compared to the annual average high of 16.1°C, September runs +8.6°C.
September in Suwon-si averages a daytime high of 24.7°C and an overnight low of 14.7°C.
September runs +8.6°C compared to Suwon-si's annual average high of 16.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.7°C and cooler evenings around 14.7°C.