June
Best time
17.1°C / 10.8°C
14 rain days
mild, rainy
Best time to visit Belfast
Belfast, United Kingdom — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: June, September.
Best months to visit
September
Best time
16.2°C / 10.7°C
14 rain days
mild, rainy
OK — shoulder months
July
OK
18.2°C / 12°C
17 rain days
mild, very wet
- comfortable temperatures (avg high 18.2°C / 65°F)
August
OK
17.7°C / 12°C
17 rain days
mild, very wet
May
OK
14.3°C / 7.6°C
14 rain days
cool, rainy
October
OK
13.2°C / 8.5°C
15 rain days
cool, rainy
April
OK
11.1°C / 4.9°C
12 rain days
cool, rainy
November
OK
9.9°C / 5.6°C
15 rain days
chilly, rainy
March
OK
9.3°C / 3.5°C
16 rain days
chilly, very wet
December
OK
8.2°C / 4.2°C
15 rain days
chilly, rainy
February
OK
7.8°C / 3.2°C
15 rain days
chilly, rainy
January
OK
7.3°C / 3.1°C
14 rain days
chilly, rainy
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.