Cardiff weather in August
Long-run climate averages for Cardiff, Wales in August, plus what the forecast models say for the days ahead.
In August, Cardiff averages 20°C by day and 13°C at night. The wettest month is usually October.
August in Cardiff averages a daytime high of 20°C and an overnight low of 13°C, which reads as mild for this part of the world. It is among the three warmest months of the year here. Across the whole year Cardiff sees roughly 1510 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Cardiff forecast with every model compared and how much they currently agree.
Cardiff weather by month
what to expect in Cardiff through the yearHere is Cardiff's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Cardiff by season.