Weather in Cardiff, Wales, United Kingdom in August
In an average August, Cardiff sees a daily high around 20°C and a low around 13°C, based on 1981–2026 of local climate records.
| Average high | 20°C |
|---|---|
| Typical high range | 17°C to 23°C |
| Average low | 13°C |
| Typical low range | 11°C to 15°C |
| Average daily precipitation | 3 mm |
August records
The most extreme August on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
30°C
2022-08-13
Lowest
14°C
1986-08-18
Low
Highest
19°C
1995-08-02
Lowest
7°C
1986-08-31
Feels-like
Highest
36°C
2025-08-12
Lowest
3°C
1986-08-29
Humidity
Highest
16.5 g/m³
2003-08-10
Lowest
7.9 g/m³
2014-08-20
Wind
Highest
60 km/h
2020-08-25
Lowest
8 km/h
2020-08-31
Precip
Wettest
159 mm
1999
Driest
9 mm
1995
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