In September, Purley typically sees daytime highs of 18.5°C and overnight lows around 9.9°C. Compared to the annual average high of 13.7°C, September runs +4.8°C.
September in Purley averages a daytime high of 18.5°C and an overnight low of 9.9°C.
September runs +4.8°C compared to Purley's annual average high of 13.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.5°C and cooler evenings around 9.9°C.