Arklow Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Arklow.
Climate overview of Arklow
The climate in Arklow, Wicklow County, Ireland, sees a moderate range of temperatures across the year, from 19°C (66°F) in July down to 9°C (48°F) in January.
With around 1001 mm (39 in) of annual rainfall, Arklow has a notably wet climate. The wettest month is November. Sunshine peaks in May, when the city sees around 7.1 hours of sunshine per day.
Arklow Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arklow - and find the best time to visit.
Monthly Temperature in Arklow
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
Rainfall in Arklow
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
Sunshine Hours in Arklow
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
Humidity in Arklow by Month
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
Best Time to Visit Arklow
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, August and September
- Most sunshine: May
Frequently asked questions about the climate in Arklow
What is the best time to visit Arklow?
July and August typically offer the most optimal weather in Arklow. In contrast, January, February, November and December tend to have less optimal conditions.
What temperatures can I expect in Arklow?
Daytime highs range from 9°C (48°F) in January to 19°C (66°F) in July. Nighttime lows range from 4°C (39°F) to 13°C (55°F).
How much rain does Arklow get?
Annual rainfall is around 1001 mm (39 in). November is the wettest month with 108 mm (4.3 in), while March is the driest with 68 mm (2.7 in).
How sunny is Arklow?
Arklow receives around 1,600 hours of sunshine per year. May is the sunniest month with 213 hours, while December is the cloudiest with just 54 hours.
Arklow 3-Day Forecast
Arklow on the map
Arklow is highlighted - select any city to see its climate.
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