Slane Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Slane.
Climate overview of Slane
Temperatures in Slane, Meath, Ireland, vary greatly throughout the year. July is the hottest month at 20°C (68°F), while January is the coldest at 9°C (48°F).
With around 885 mm (35 in) of annual rainfall, the city has moderate precipitation levels. August is the wettest month and March the driest. It also has pleasant summers and cold winters. The most sunshine falls in May, with an average of 6.3 hours of daily sunshine.
Slane Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Slane - and find the best time to visit.
Monthly Temperature in Slane
The climate in Slane is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a pleasant 20°C (68°F) in July to a chilly 9°C (48°F) in the coolest month, January.
Nights vary from 13°C (55°F) in July to around 3°C (37°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Slane
Generally, Slane receives mid-range precipitation levels, with 885 mm (35 in) annually. Precipitation levels in Slane remain relatively steady throughout the year. August has the most rain, with 84 mm (3.3 in) over 17 days. In the driest month March, this drops slightly to 62 mm (2.4 in), making the city's climate fairly predictable. For more details, please visit our Slane 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 Slane
For those who appreciate different seasons, Slane serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.3 hours of sunshine daily, and embrace the darker days in December, offering only 1.7 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Slane by Month
The relative humidity is high throughout the year in Slane.
The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Slane
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: May and June
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Slane
What is the best time to visit Slane?
July and August typically offer the most optimal weather in Slane. In contrast, January, February and December tend to have less optimal conditions. Slane has pleasant summers and cold winters.
What temperatures can I expect in Slane?
Daytime highs range from 9°C (48°F) in January to 20°C (68°F) in July. Nighttime lows range from 3°C (37°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Slane get?
Annual rainfall is around 885 mm (35 in). August is the wettest month with 84 mm (3.3 in), while March is the driest with 62 mm (2.4 in).
How sunny is Slane?
Slane receives around 1,432 hours of sunshine per year. May is the sunniest month with 188 hours, while December is the cloudiest with just 51 hours.
Slane 3-Day Forecast
Slane on the map
Slane is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
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