In September, Tongchuan typically sees daytime highs of 25.4°C and overnight lows around 18.9°C. Compared to the annual average high of 20.7°C, September runs +4.7°C.
September in Tongchuan averages a daytime high of 25.4°C and an overnight low of 18.9°C.
September runs +4.7°C compared to Tongchuan's annual average high of 20.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 25.4°C and cooler evenings around 18.9°C.