ClimateForecastDecemberJanuary >>

Dun Laoghaire Climate by Month

Temperatures in Dun Laoghaire experience a moderate degree of variance through the seasons. Days can be pleasant, while the cooler months tend to be cold. It receives a moderate amount of precipitation. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

In Dun Laoghaire, seasonal changes bring about a moderate variation in temperatures. On average, daytime temperatures range from a pleasant 19°C in July to a chilly 9°C in February. Nighttime temperatures can drop, with averages reaching 4°C in February.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Dun Laoghaire receives mid-range precipitation levels, with 961 mm annually. The wettest period in Dun Laoghaire occurs in November, which receives around 100 mm of precipitation. During the driest month, March, Dun Laoghaire experiences moderate rainfall, totaling approximately 66 mm. The consistent precipitation levels throughout the year contribute to a relatively stable climate.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Dun Laoghaire, summer days are longer and more sunny, with daily sunshine hours peaking at 6.3 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.7 hours per average day.

Monthly hours of sunshine

Data from: Dublin, Ireland (17 KM, 10 Miles).

Daily hours of sunshine

Data from: Dublin, Ireland (17 KM, 10 Miles).

Average water temperature

The mean water temperature over the year in Dun Laoghaire ranges from 8°C in March to 15°C in August.

Water temperature over the year

Data from: Dublin, Ireland (17 KM, 10 Miles).

The best time of year to visit Dun Laoghaire in Ireland

Other facts from our historical weather data:
  • Which is the warmest month in Dun Laoghaire?
    July has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Dun Laoghaire?
    The coldest month is February with an average maximum temperature of 9°C.
  • Which is the wettest month in Dun Laoghaire?
    November tops the wettest month list with 100 mm of rainfall.
  • Which is the driest month in Dun Laoghaire?
    March is the driest month with 66 mm of precipitation.
  • Which is the sunniest month in Dun Laoghaire?
    May is the sunniest month with an average of 188 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Dun Laoghaire

    Fri   Dec 13
    6°C | 3°C
    W 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sat   Dec 14
    9°C | 2°C
    W 22 km/h
    overcast and no rain

    overcast and no rain

    Sun   Dec 15
    12°C | 8°C
    W 25 km/h
    overcast and no rain

    overcast and no rain