Donegal Weather in January
January in Donegal brings low temperatures, with daytime highs of 8°C (46°F) and nights around 3°C (37°F). Quite a bit of rainfall is expected, around 127 mm (5 in), so pack an umbrella.
Rainfall in Donegal in January
Analyzing past climate data, one can expect approximately 24 days of rain, averaging 127 mm (5 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Donegal in January
Donegal in January gets highs of 8°C (46°F) during the day and drops to 3°C (37°F) at night. Winter occurs in January. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. Typically, it's the chilliest month of the year. Ensure you're prepared by packing appropriate winter gear.
Sunshine in Donegal in January
With limited sunshine this month, there are about 50 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.January in Donegal can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options 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 Donegal's climate page.
Donegal Temperature in January
Min Temperature
3°C (37°F)
Max Temperature
8°C (46°F)
Chance of Rain
79%
Precipitation
127 mm (5 in)
Rainy days
24 days
Sunshine
50 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Donegal typically stay consistent throughout January, with daily highs averaging around 8°C (46°F). Nights are cold, with lows around 3°C (37°F).
Average temperatures in January
Historical weather for Donegal in January
Browse day-by-day weather records for Donegal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Donegal historical weather extremes in January
Based on weather observations in Donegal between 2000 and 2025, these are the recorded extremes during January.
- The warmest day in January was on January 24, 2016, with a maximum of 14°C (57°F).
- The coldest January day was on January 8, 2010, with a maximum of -1°C (30°F).
- The coldest night in January in Donegal was on January 8, 2010, with a minimum of -9°C (16°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 Donegal in January
We recommend to layer up for chilly conditions in Donegal in January. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Donegal 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 Donegal's climate page.
See the full Donegal climate overview or explore weather in Ireland.
