Belfast Weather, When to Go and Climate Information

(Belfast, Northern Ireland, UK)

The Belfast weather and climate is fairly temperate, with mild winters and warm summers. At times, Northern Ireland can be breezy, with sudden changes in the weather from cloudy skies to clear, sunny blue skies and vice versa. Lightweight clothes are ideal in the summer months of June, July, August and September in Belfast, with thicker jackets or coats in the spring and autumn.

Belfast Weather and ClimateBelfast is known for its clear, blue skies and during the summer months, while the city has many fine and often extremely sunny days, with Northern Ireland's climate at this time of the year being generally very mild. Northern Ireland lies on the path of the North Atlantic cyclones, which makes the regional climate particularly pleasant and the nearby Gulf Stream in the Atlantic means that Belfast never usually has sudden extremes of hot or cold weather.

Spring is a particularly popular time to visit Belfast and the weather is fairly mild during March, April and May, although some days may be rainy and windy. Many of the trees begin to flower at this time of the year and daffodils soon arrive.

Winters in Belfast can be long and damp and fewer sunny days occur in November, December and January. The weather in Northern Ireland is at its coldest during the winter months, so be sure to bring a warm overcoat, scarf and gloves. Snow is infrequent, but there are often cold, clear, frosty days. December, January and February are the wettest months, although there is often some fine sunshine at this time of year, particularly on the coldest frosty days.

Belfast Weather and Climate Chart (Averages)

The following are the normal daily temperature ranges for Belfast:


7°C / 45°F
3°C / 37°F


9°C / 48°F
2°C / 36°F


15°C / 59°F
4°C / 39°F


17°C / 63°F
6°C / 43°F


18°C / 64°F
9°C / 48°F


23°C / 73°F
12°C / 54°F


22°C / 72°F
13°C / 55°F


26°C / 79°F
15°C / 59°F


22°C / 72°F
10°C / 50°F


14°C / 57°F
6°C / 43°F


12°C / 54°F
6°C / 43°F


9°C / 48°F
3°C / 37°F

Belfast Weather Charts - further Belfast climate statistics and charts.