Dundalk Weather & Climate: Best Time to Visit

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

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

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

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