In September, Yeosu typically sees daytime highs of 26.3°C and overnight lows around 17.0°C. Compared to the annual average high of 18.4°C, September runs +8.0°C.
September in Yeosu averages a daytime high of 26.3°C and an overnight low of 17.0°C.
September runs +8.0°C compared to Yeosu's annual average high of 18.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.3°C and cooler evenings around 17.0°C.