In September, Dundalk typically sees daytime highs of 25.4°C and overnight lows around 14.1°C. Compared to the annual average high of 17.7°C, September runs +7.7°C.
September in Dundalk averages a daytime high of 25.4°C and an overnight low of 14.1°C.
September runs +7.7°C compared to Dundalk's annual average high of 17.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.4°C and cooler evenings around 14.1°C.