In August, Dun Laoghaire typically sees daytime highs of 18.6°C and overnight lows around 11.6°C. Compared to the annual average high of 12.7°C, August runs +5.9°C.
August in Dun Laoghaire averages a daytime high of 18.6°C and an overnight low of 11.6°C.
August runs +5.9°C compared to Dun Laoghaire's annual average high of 12.7°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 18.6°C and cooler evenings around 11.6°C.