Dun Laoghaire Weather in December
December in Dun Laoghaire typically sees daytime highs of 10°C (50°F) and nighttime lows of 5°C (41°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.
Rainfall in Dun Laoghaire in December
Past climate data indicates that roughly 17 days will see rain, totalling around 88 mm (3.5 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Dun Laoghaire in December
Dun Laoghaire in December gets highs of 10°C (50°F) during the day and drops to 5°C (41°F) at night. December is in the winter season. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Dun Laoghaire in December
The month has fewer sunny days, with around 51 hours of sunshine.
Wind Speed in Dun Laoghaire in December
December sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.
Average water temperature in December
With water temperatures around 11°C (52°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.December in Dun Laoghaire has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Dun Laoghaire's climate page.
Dun Laoghaire Temperature in December
Min Temperature
5°C (41°F)
Max Temperature
10°C (50°F)
Water Temperature
11°C (52°F) *
Chance of Rain
58%
Precipitation
88 mm (3.5 in)
Rainy days
17 days
Humidity
83% *
Windspeed
6 m/s (12 knots) *
Sunshine
51 hours *
Percentage Sunshine
23% *
Best Places in Ireland in December
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Dun Laoghaire in December
Dress warmly and in layers for your trip to Dun Laoghaire in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 11°C (52°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.What To Do in Dun Laoghaire in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Dun Laoghaire's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Dun Laoghaire climate overview or explore weather in Ireland.
