Climate almanac
Ballycastle
Northern Ireland, United Kingdom · 55.20°, -6.24°
What is the climate like in Ballycastle?
The best time to visit Ballycastle is typically May, the year's most comfortable month (5.5/10). Ballycastle is warmest in August, when daily highs average 59°F (15°C), and coolest in February, when lows fall to about 42°F (6°C). The wettest month is typically November and the driest is May; the year sees roughly 55 in (1391 mm) of precipitation.
- Best time to visitMay — the year's comfort peak (5.5/10)
- Warmest monthAugust — average high 59°F (15°C)
- Coolest monthFebruary — average low 42°F (6°C)
- Wettest monthNovember (6.3 in (159 mm))
- Driest monthMay (2.7 in (69 mm))
- Annual precipitation55 in (1391 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromAldergrove, 61 km away (1939-2025)