Weather in Cardiff in August
In an average August, Cardiff sees a daily high around 19°C and a low around 12°C, based on 1980–2026 of local climate records.
| Average high | 19°C |
|---|---|
| Typical high range | 16°C to 23°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
31°C
2026-08-12
Lowest
12°C
1986-08-18
Low
Highest
19°C
2003-08-05
Lowest
5°C
2012-08-31
Feels-like
Highest
35°C
2020-08-12
Lowest
1°C
1992-08-29
Humidity
Highest
16.7 g/m³
2003-08-10
Lowest
7.0 g/m³
1987-08-07
Wind
Highest
46 km/h
2020-08-25
Lowest
5 km/h
1992-08-19
Gust
Highest
99 km/h
2020-08-25
Lowest
14 km/h
2016-08-14
Precip
Wettest
195 mm
1992
Driest
8 mm
1995
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