In September, Wonju typically sees daytime highs of 24.6°C and overnight lows around 13.2°C. Compared to the annual average high of 16.3°C, September runs +8.3°C.
September in Wonju averages a daytime high of 24.6°C and an overnight low of 13.2°C.
September runs +8.3°C compared to Wonju's annual average high of 16.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.6°C and cooler evenings around 13.2°C.