Weather in Belfast in August
In an average August, Belfast sees a daily high around 18°C and a low around 12°C, based on 1980–2026 of local climate records.
| Average high | 18°C |
|---|---|
| Typical high range | 16°C to 21°C |
| Average low | 12°C |
| Typical low range | 9°C to 15°C |
| Average daily precipitation | 3 mm |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
27°C
1990-08-02
Lowest
12°C
1986-08-25
Low
Highest
18°C
1997-08-20
Lowest
4°C
1989-08-28
Feels-like
Highest
29°C
1990-08-02
Lowest
1°C
1989-08-28
Humidity
Highest
15.3 g/m³
2003-08-07
Lowest
7.1 g/m³
1992-08-31
Wind
Highest
39 km/h
1989-08-14
Lowest
5 km/h
2002-08-19
Gust
Highest
91 km/h
2020-08-21
Lowest
13 km/h
2021-08-28
Precip
Wettest
171 mm
1985
Driest
17 mm
1995
See Belfast's live weather grade →
Visiting Belfast in August? See how its comfort stacks up against where you live.
Compare Belfast with your city →