Northern Ireland Weather & Climate

The climate of Northern Ireland is similar to that of the Republic of Ireland in that it can be unpredictable and can change often however, just like the Republic, the weather in Northern Ireland is rarely extreme. Something visitors will notice is that the weather is popular topic of conversation ni Northern Ireland due to the changing and varied conditions. Predominantly influenced by the Atlantic Ocean, Northern Ireland’s weather and climate is much milder than many other countries that share a similar latitude.

Sheltered by hills and mountainous coastline, Northern Ireland’s temperatures remain mild thanks to a warmer, major ocean current known as the North Atlantic Drift. Despite its ever-changing weather, the mild conditions of Northern Ireland means that the region is great to visit year round and offers different experiences in different seasons. From February to April, the pleasant spring temperatures range from 8°C to 12°C with April known as the loveliest month. May to July sees the arrival of summer and with it warmer temperatures of between 18°C and 20°C. The warmest months are July and August, which also offer the longest days with up to 18 hours of daylight.

From August to October, autumn temperatures remain pleasant and relatively warm at between 14°C to 18°C with September known as one of the mildest and temperate months. Of course winter is the coldest with temperatures dropping to 8°C inland. The coldest months are January and February where the temperature usually drops below freezing, however there is little to no snowfall during this time. The warmer weather, longer days and festival season that summer brings with it makes it the most popular time to visit Northern Ireland however autumn and spring are a pleasant time to visit to as things are less crowded and you’ll see the landscape change to gold, red and brown.

Northern Ireland Weather Forecast


clear sky



Northern Ireland Annual Average Climate

Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rainfall (mm) 80 60 80 50 50 70 70 80 80 90 80 80
Temp (°C) 5.1 5.2 6.9 8.6 11.2 13.9 15.7 15.4 13.4 10.3 7.3 5.3
Min Temp (°C) 2.2 2.1 3.5 4.7 6.9 9.8 11.7 11.5 9.6 7 4.2 2.3
Max Temp (°C) 7.9 8.3 10.2 12.4 15.4 17.9 19.7 19.3 17.1 13.6 10.3 8.2

Northern Ireland Annual Average Temperature Graph (°C)

Northern Ireland Annual Average Rainfall Graph (mm)