In September, Koch'ang typically sees daytime highs of 25.5°C and overnight lows around 16.8°C. Compared to the annual average high of 17.1°C, September runs +8.4°C.
September in Koch'ang averages a daytime high of 25.5°C and an overnight low of 16.8°C.
September runs +8.4°C compared to Koch'ang's annual average high of 17.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 16.8°C.