August · United Kingdom
Best time to visit Belfast in August Weather, crowds & prices
Weather in Belfast in August
Average temperature 15°C, 100 mm of rain, about 25 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
7.9/10
Ranked #2 of 12 months
- Avg temp
- 15°C
- Rainfall
- 100 mm
- Humidity
- 80%
- Days with 6h+ sun
- 25
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Belfast scores 7.9/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 15°C, 100 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Belfast's Titanic Quarter, Cathedral Quarter, and political murals trace a shipbuilding city remaking its waterfront.
August in Belfast — reliably good (2nd best month)
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
100 mm of rain makes this a wet month here, though with about 25 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 7.9/10 on the same scale — 2nd of 12 months, versus 8.1/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Belfast in August?
- In August, Belfast averages 15°C, 100 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 7.9/10.
- Is August a good time to visit Belfast?
- August earns a 7.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Belfast in August?
- Expect about 100 mm of rain in August. Average humidity is 80% and there are about 25 days with 6+ hours of sunshine.
Curated in Belfast
Tickets & experiences
Things to do in Belfast
Belfast, United Kingdom. Live activities and tours from GetYourGuide, matched to this destination.