In September, Tonghae typically sees daytime highs of 23.3°C and overnight lows around 15.8°C. Compared to the annual average high of 16.0°C, September runs +7.3°C.
September in Tonghae averages a daytime high of 23.3°C and an overnight low of 15.8°C.
September runs +7.3°C compared to Tonghae's annual average high of 16.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 23.3°C and cooler evenings around 15.8°C.