Sligo Weather in January
Sligo in January sees low daytime temperatures of 9°C (48°F) and nighttime lows of 3°C (37°F). Rainfall is fairly high this month at around 119 mm (4.7 in), so pack a rain jacket to stay dry.
Rainfall in Sligo in January
Rain is expected on roughly 23 days, totalling around 119 mm (4.7 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 Sligo in January
Sligo in January gets highs of 9°C (48°F) during the day and drops to 3°C (37°F) at night. This month falls in the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Prepare for the coldest month of the year by packing warm and cozy winter cloths.
Sunshine in Sligo in January
The area sees fewer sunny days, with a projection of about 45 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Sligo. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Sligo's climate page.
Sligo Temperature in January
Min Temperature
3°C (37°F)
Max Temperature
9°C (48°F)
Chance of Rain
78%
Precipitation
119 mm (4.7 in)
Rainy days
23 days
Humidity
90% *
Sunshine
45 hours *
Percentage Sunshine
22% *
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Sligo typically stay consistent throughout January, with daily highs averaging around 9°C (48°F). Nights are cold, with lows around 3°C (37°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Sligo in January
Browse day-by-day weather records for Sligo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sligo historical weather extremes in January
Our historical data for Sligo spans 2000 to 2025, revealing these weather extremes.
- The hottest January day on record in Sligo reached 14°C (57°F) (January 23, 2024).
- On January 8, 2010, Sligo saw its coldest January day with temperatures maxing out at -1°C (30°F).
- The coldest night in January in Sligo was on January 9, 2010, with a minimum of -7°C (19°F).
- The wettest January day on record brought 27 mm (1.1 in) of precipitation to Sligo (January 19, 2021).
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 →
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What to Wear in Sligo in January
Dress warmly and in layers for your trip to Sligo in January. 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. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.What To Do in Sligo 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 Sligo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Sligo climate overview or explore weather in Ireland.
