Castletownbere Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castletownbere.
Climate overview of Castletownbere
Temperatures in Castletownbere, County Cork, Ireland, shift moderately through the seasons. The warmest month is August at 18°C (64°F), and the coolest is January at 10°C (50°F).
With around 1523 mm (60 in) of annual rainfall, Castletownbere has a notably wet climate. The wettest month is December. Sunshine peaks in May, when the city sees around 6.0 hours of sunshine per day.
Castletownbere Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castletownbere - and find the best time to visit.
Monthly Temperature in Castletownbere
The weather in Castletownbere changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a pleasant 18°C (64°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).
At night, temperatures range from around 13°C (55°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castletownbere
Castletownbere has a notably wet climate with abundant precipitation, recording 1523 mm (60 in) of rainfall per year. Castletownbere experiences moderate seasonal variation in rainfall, with monthly averages ranging from 171 mm (6.7 in) in December, the wettest month, and 97 mm (3.8 in) in May, the driest month. For more details, please visit our Castletownbere 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 Castletownbere
Castletownbere can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.3 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 Castletownbere by Month
The relative humidity is high throughout the year in Castletownbere.
The city experiences its highest humidity in July, reaching 80%. In April, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Castletownbere
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July and August
- Warmest weather: June, July, August and September
- Most sunshine: May
- Fewest rainy days: April, May, June and July
Frequently asked questions about the climate in Castletownbere
What is the best time to visit Castletownbere?
May, June, July and August typically offer the most optimal weather in Castletownbere. In contrast, January, February, March, April, November and December tend to have less optimal conditions.
What temperatures can I expect in Castletownbere?
Daytime highs range from 10°C (50°F) in January to 18°C (64°F) in August. Nighttime lows range from 5°C (41°F) to 13°C (55°F).
How much rain does Castletownbere get?
Annual rainfall is around 1523 mm (60 in). December is the wettest month with 171 mm (6.7 in), while May is the driest with 97 mm (3.8 in).
How sunny is Castletownbere?
Castletownbere receives around 1,268 hours of sunshine per year. May is the sunniest month with 180 hours, while December is the cloudiest with just 40 hours.
Castletownbere 3-Day Forecast
Castletownbere on the map
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Where to go in August - average daytime high across popular destinations.
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