In September, Bournemouth typically sees daytime highs of 17.9°C and overnight lows around 11.4°C. Compared to the annual average high of 13.4°C, September runs +4.5°C.
September in Bournemouth averages a daytime high of 17.9°C and an overnight low of 11.4°C.
September runs +4.5°C compared to Bournemouth's annual average high of 13.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 17.9°C and cooler evenings around 11.4°C.