Dundalk Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dundalk.
Climate overview of Dundalk
Dundalk, Louth County, Ireland, experiences moderate temperature changes through the seasons. July is the warmest month with daytime highs of 20°C (68°F), while January is the coolest at 9°C (48°F).
Annual rainfall is moderate at around 947 mm (37 in), with August being the wettest month. The city also has pleasant summers and cold winters. The sunniest month is May, with 6.3 hours of sunshine per day on average.
Dundalk Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dundalk - and find the best time to visit.
Monthly Temperature in Dundalk
The weather in Dundalk changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a pleasant 20°C (68°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).
At night, temperatures range from around 12°C (54°F) in July to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dundalk
Generally, Dundalk has a moderate amount of precipitation, averaging 947 mm (37 in) of rainfall annually. Despite minor fluctuations, Dundalk enjoys fairly consistent precipitation throughout the year. In August, you can expect around 89 mm (3.5 in) of precipitation, while in March, Dundalk receives about 66 mm (2.6 in). For more details, please visit our Dundalk 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 Dundalk
Dundalk can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.3 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.7 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 Dundalk by Month
The relative humidity is high throughout the year in Dundalk.
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 Dundalk
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July
- Warmest weather: June, July and August
- Most sunshine: May and June
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Dundalk
What is the best time to visit Dundalk?
July typically offers the most optimal weather in Dundalk. In contrast, January, February and December tend to have less optimal conditions. Dundalk has pleasant summers and cold winters.
What temperatures can I expect in Dundalk?
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 12°C (54°F).
How much rain does Dundalk get?
Annual rainfall is around 947 mm (37 in). August is the wettest month with 89 mm (3.5 in), while March is the driest with 66 mm (2.6 in).
How sunny is Dundalk?
Dundalk 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.
Dundalk 3-Day Forecast
Dundalk on the map
Dundalk is highlighted - select any city to see its climate.
Popular this month
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