Sligo
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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.

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% *
* Data from: Claremorris, Ireland (70 KM, 43 Miles).

Sligo Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Sligo - and find the best time to visit.

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 records 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 →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

  • Swimming
    4/10
  • Cycling
    4/10
  • Walking
    4/10
  • Camping
    3/10
  • Outdoor sports
    4/10

Sligo 3-Day Forecast

More climate data for Sligo

Popular in January

Where to go in January - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.