Arklow Weather & Climate: Best Time to Visit

In Arklow, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a pleasant 19°C (66°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 13°C (55°F) in July to 4°C (39°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Arklow experiences significant rainfall throughout the year, averaging 1001 mm (39 in) of precipitation annually. Despite minor fluctuations, Arklow enjoys fairly consistent precipitation throughout the year. In November, you can expect around 108 mm (4.3 in) of precipitation, while in March, Arklow receives about 68 mm (2.7 in). For more details, please visit our Arklow Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Arklow can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 7.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 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 Arklow.

The city experiences its highest humidity in December, reaching 82%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year