Ballycastle Weather & Climate: Best Time to Visit

The climate in Ballycastle experiences moderate temperature changes, with mild shifts between seasons. On average, daytime temperatures range from a moderate 17°C (63°F) in August to a chilly 9°C (48°F) in February.

Nighttime temperatures range from 13°C (55°F) in August to 5°C (41°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ballycastle has a relatively rainy climate with high precipitation levels, averaging 1345 mm (53 in) of rainfall annually. The amount of precipitation varies moderately throughout the year. The wettest month, November, sees around 155 mm (6.1 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, May, still receives a respectable 74 mm (2.9 in) of rainfall. For more details, please visit our Ballycastle Precipitation page.

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

The average number of days each month with precipitation

In Ballycastle, summer days are longer and more sunny, with daily sunshine hours peaking at 6.1 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.3 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The city experiences its highest humidity in September, reaching 91%. In February, the humidity drops to its lowest level at 86%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year