Weather in Cardiff in August
How warm is it in Cardiff in August?
In August the typical daytime high in Cardiff is 21.1 °C on average, from 21.5 °C at the start to 20.2 °C at the end of the month.
That is 0.3 °C cooler than in July and 2.4 °C warmer than in September.
The last 10 years were 1.7 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Oxford (136 km), Pte De La Hague (214 km) and Valley (217 km); nearer ones count more.