Rosslare Weather in January
January in Rosslare brings low temperatures around 10°C (50°F) during the day, dropping to 7°C (45°F) at night, with quite a bit of rainfall expected, averaging around 98 mm (3.9 in) for the month.
Rainfall in Rosslare in January
Analyzing past climate data, one can expect approximately 19 days of rain, averaging 98 mm (3.9 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Rosslare in January
In January, expect low temperatures in Rosslare, with highs of 10°C (50°F) and lows of 7°C (45°F) at night. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Rosslare in January
The area experiences limited sunny days, amounting to roughly 60 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.
Wind Speed in Rosslare in January
Average wind conditions reach 6 m/s (12 knots) in January. This creates notably windy weather that is clearly felt and can influence daily activities. Keep in mind this is an average. Some days are less intense, while others can be quite gusty.
Average water temperature in January
At 9°C (48°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.Our weather planner can help you find worldwide destinations with pleasant weather during this period. August typically offers the best weather for Rosslare.
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 January
Min Temperature
7°C (45°F)
Max Temperature
10°C (50°F)
Water Temperature
9°C (48°F)
Chance of Rain
63%
Precipitation
98 mm (3.9 in)
Rainy days
19 days
Humidity
80%
Windspeed
6 m/s (12 knots)
Sunshine
60 hours
Percentage Sunshine
27%
Daily Historical Temperatures
50-year average (1976-2026)
Based on our historical records, temperatures in Rosslare typically stay consistent throughout January, with daily highs averaging around 10°C (50°F). Nights are cold, with lows around 4°C (39°F).
Average temperatures in January
Historical weather for Rosslare in January
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 January
Based on weather observations in Rosslare between 2000 and 2025, these are the recorded extremes during January.
- The warmest day in January was on January 1, 2022, with a maximum of 14°C (57°F).
- Rosslare experienced its chilliest January day on January 6, 2010, reaching only 0°C (32°F).
- Rosslare registered its coldest January night on January 2, 2010, with temperatures dropping to -6°C (21°F).
Best Places in Ireland in January
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Rosslare in January
The weather can be unpredictable in January, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 9°C (48°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Rosslare in January
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.
