Weather in Cardiff, Wales, United Kingdom in September
In an average September, Cardiff sees a daily high around 18°C and a low around 11°C, based on 1981–2026 of local climate records.
| Average high | 18°C |
|---|---|
| Typical high range | 15°C to 21°C |
| Average low | 11°C |
| Typical low range | 8°C to 14°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
27°C
2023-09-09
Lowest
10°C
2012-09-23
Low
Highest
19°C
2023-09-08
Lowest
4°C
1986-09-17
Feels-like
Highest
27°C
2023-09-09
Lowest
0°C
1986-09-17
Humidity
Highest
15.6 g/m³
2023-09-09
Lowest
6.7 g/m³
2003-09-24
Wind
Highest
62 km/h
1983-09-03
Lowest
7 km/h
2022-09-20
Precip
Wettest
155 mm
1981
Driest
17 mm
2014
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