Cardiff is wet. Very wet. It seems to be raining all the time, so an umbrella is needed most of the time. You can expect rain on 261 days a year, spread pretty uniformly. An
average summer temperature is 19 degrees centigrade and in winter you can expect the temperature to fall as low as freezing but not for very long, with 7 degrees as a reasonable average. Extreme weather is rare, but it can get windy in the autumn and fog is quite common.
Today's Weather Climate Data