In December, Dundalk typically sees daytime highs of 6.2°C and overnight lows around -2.6°C. Compared to the annual average high of 17.7°C, December runs -11.5°C.
December in Dundalk averages a daytime high of 6.2°C and an overnight low of -2.6°C.
December runs -11.5°C compared to Dundalk's annual average high of 17.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 6.2°C and cooler evenings around -2.6°C.