Sligo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sligo.
Climate overview of Sligo
Temperatures in Sligo, Sligo County, Ireland, shift moderately through the seasons. The warmest month is July at 19°C (66°F), and the coolest is January at 9°C (48°F).
Rainfall is high, totalling around 1349 mm (53 in) per year. December is the wettest month and April the driest. The city also experiences pleasant summers and cold winters. The most sunshine falls in May, with an average of 5.2 hours of daily sunshine.
Sligo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sligo - and find the best time to visit.
Monthly Temperature in Sligo
The weather in Sligo changes moderately throughout the year, offering enough variation to appreciate each season. Average maximum daytime temperatures range from a pleasant 19°C (66°F) in July, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sligo
Sligo has a notably wet climate with abundant precipitation, recording 1349 mm (53 in) of rainfall per year. Year-round, Sligo has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 124 mm (4.9 in), and the driest month, April, with 95 mm (3.7 in), is minimal. For more details, please visit our Sligo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sligo
Seasonal changes in sunshine hours are quite dramatic in Sligo. While May receives considerable daily sunshine with up to 5.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Sligo by Month
The city experiences its highest humidity in January, reaching 90%. In May, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Sligo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July and August
- Warmest weather: June, July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Sligo
What is the best time to visit Sligo?
June, July and August typically offer the most optimal weather in Sligo. In contrast, January, February, March, November and December tend to have less optimal conditions. Sligo has pleasant summers and cold winters.
What temperatures can I expect in Sligo?
Daytime highs range from 9°C (48°F) in January to 19°C (66°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F).
How much rain does Sligo get?
Annual rainfall is around 1349 mm (53 in). December is the wettest month with 124 mm (4.9 in), while April is the driest with 95 mm (3.7 in).
How sunny is Sligo?
Sligo receives around 1,114 hours of sunshine per year. May is the sunniest month with 157 hours, while December is the cloudiest with just 35 hours.
Sligo 3-Day Forecast
Sligo on the map
Sligo is highlighted - select any city to see its climate.
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