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Belfast Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Belfast year round climate

  • Spring (March–May): Average 45–55°F, cool and humid climate with occasional showers. March and April can be rather chilly. Popular activities: Exploring city attractions, visiting museums, walking along Belfast Harbour. Recommended clothing: Warm jacket, comfortable trousers, raincoat or umbrella.
  • Summer (June–August): Average 58–60°F, mild but still humid climate with frequent rainfall. Sunny days are less common. Popular activities: Picnics in city parks, visiting Carrickfergus Castle, exploring the Giant’s Causeway. Recommended clothing: Light jacket, trousers or skirt, comfortable shoes, umbrella.
  • Autumn (September–November): Average 47–57°F, cooler temperatures and increased rainfall, with October being the rainiest month. Variable weather conditions with possible strong winds. Popular activities: Visiting Titanic Belfast, appreciating autumn colours, enjoying local cuisine in cosy pubs. Recommended clothing: Waterproof jacket, warm layers, comfortable shoes.
  • Winter (December–February): Average 42–45°F, cold and humid climate with moderate rainfall. Frost and snow are possible. Popular activities: Indoor visits to museums, art galleries or theatres, enjoying hot drinks. Recommended clothing: Thick coat, warm layers, scarf, gloves and hat.

Belfast climatological average

Annual average temperature: approx. 51.8°F / Annual rainfall: approx. 942 mm / Summer humidity: 70%–80% / Rainiest month: October

Belfast monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
43°F
39.8
February
45.7°F
57
March
45.3°F
89.9
April
48.6°F
73.6
May
55.6°F
66.6
June
58.8°F
70.3
July
60.1°F
89.2
August
61°F
80.6
September
57.7°F
96.5
October
53.4°F
111.1
November
47.5°F
81.4
December
44.4°F
86.6

Belfast weather for the next seven days

1/22
Thursday
Moderate rain
47.5°F/43.2°F
1/23
Friday
Patchy rain nearby
43.7°F/40.5°F
1/24
Saturday
Patchy rain nearby
44.4°F/41.5°F
1/25
Sunday
Moderate rain
42.6°F/37.3°F
1/26
Monday
Moderate rain
41.4°F/35.5°F
1/27
Tuesday
Patchy rain nearby
40.6°F/35.2°F
1/28
Wednesday
Patchy rain nearby
44.9°F/33.3°F