In September, East Hampton typically sees daytime highs of 26.7°C and overnight lows around 18.1°C. Compared to the annual average high of 20.0°C, September runs +6.7°C.
September in East Hampton averages a daytime high of 26.7°C and an overnight low of 18.1°C.
September runs +6.7°C compared to East Hampton's annual average high of 20.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 26.7°C and cooler evenings around 18.1°C.