About Dun Laoghaire, Leinster

Dun Laoghaire is a city of approximately 26,500 people in Leinster, Ireland. Located in the GMT/IST time zone at 53.3°N latitude.

Recent weather here gives a sense of typical conditions: in 2025, Dun Laoghaire recorded a mean annual temperature of 53°F, ranging from 29°F lows in January to 80°F highs in July, with about 49 inches of precipitation across the year.