Rosslare Weather in December
Rosslare in December sees low daytime temperatures of 11°C (52°F) and nighttime lows of 7°C (45°F). Rainfall is fairly high this month at around 108 mm (4.3 in), so pack a rain jacket to stay dry.
Rainfall in Rosslare in December
The climate data from previous years indicates about 18 days of rain, averaging 108 mm (4.3 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Rosslare in December
In December, Rosslare sees low temperatures, with highs of 11°C (52°F). Nights drop to around 7°C (45°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Rosslare in December
With limited sunshine this month, there are about 54 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.
Wind Speed in Rosslare 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
At 11°C (52°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.December in Rosslare 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 Rosslare's climate page.
Rosslare Temperature in December
Min Temperature
7°C (45°F)
Max Temperature
11°C (52°F)
Water Temperature
11°C (52°F)
Chance of Rain
60%
Precipitation
108 mm (4.3 in)
Rainy days
18 days
Humidity
82%
Windspeed
6 m/s (12 knots)
Sunshine
54 hours
Percentage Sunshine
28%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rosslare typically stay consistent throughout December, with daily highs averaging around 11°C (52°F). Nights are cold, with lows around 5°C (41°F).
Average temperatures in December
Historical weather for Rosslare in December
Browse day-by-day weather records for Rosslare spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rosslare historical weather extremes in December
The extremes listed below come from historical weather data collected in Rosslare from 1976 through 2025.
- On December 1, 2024, temperatures climbed to 14°C (57°F), marking the warmest December day on record.
- On December 21, 2010, Rosslare saw its coldest December day with temperatures maxing out at -1°C (30°F).
- The lowest overnight temperature recorded in December was -4°C (25°F) (December 21, 2010).
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 Rosslare in December
Pack for changing conditions in Rosslare in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. 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. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Rosslare 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 Rosslare's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Rosslare climate overview or explore weather in Ireland.
