In September, Clacton-on-Sea typically sees daytime highs of 17.9°C and overnight lows around 11.4°C. Compared to the annual average high of 12.8°C, September runs +5.1°C.
September in Clacton-on-Sea averages a daytime high of 17.9°C and an overnight low of 11.4°C.
September runs +5.1°C compared to Clacton-on-Sea's annual average high of 12.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.9°C and cooler evenings around 11.4°C.