Radyr Weather Forecast, Cardiff CF15 8

Today 8 Dec Wales

Any heavy showers clearing quickly to leave a generally brighter day with some morning sunny spells. Turning cloudier in the south this afternoon with showers possible. Breezy but winds gradually easing. Another mild day for early December. Maximum Temperature 13C.

Tonight 8 Dec Wales

Heavy rain spreading north as Storm Bram moves in from the southwest. Staying very wet overnight with travel disruption and flooding possible in places. Very high accumulations expected across the Brecon Beacons. Winds strengthen with severe gales in places later. Minimum Temperature 9C.

Tue 9 Dec Wales

Mainly cloudy with outbreaks of rain and drizzle through the morning, heavy over higher ground at first. Brightening up through the afternoon. Severe gales easing but staying windy. Exceptionally mild. Maximum Temperature 16C.

Wed 10 Dec Wales

Drier and brighter on Wednesday with sunny periods and isolated showers. Probably dry with bright spells on Thursday. Rain likely at times on Friday. Often rather windy. Staying very mild.

Thu 11 Dec Wales

Drier and brighter on Wednesday with sunny periods and isolated showers. Probably dry with bright spells on Thursday. Rain likely at times on Friday. Often rather windy. Staying very mild.

Fri 12 Dec Wales

Drier and brighter on Wednesday with sunny periods and isolated showers. Probably dry with bright spells on Thursday. Rain likely at times on Friday. Often rather windy. Staying very mild.

Sat 13 Dec Wales

A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes. These will bring spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately, especially in the west. In addition, there may also be potential for some periods of strong winds at times too. Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times.

Sun 14 Dec Wales

A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes. These will bring spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately, especially in the west. In addition, there may also be potential for some periods of strong winds at times too. Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times.

Radyr Weather Forecast

Today 8 Dec Wales

Tonight 8 Dec Wales

Tue 9 Dec Wales

Wed 10 Dec Wales

Thu 11 Dec Wales

Fri 12 Dec Wales

Sat 13 Dec Wales

Sun 14 Dec Wales

Temperature Forecast Met Office

Temperature Real-Time

Cobbacombe Cross (Devon) Radar

National Satellite

National Synoptic

Radyr Temperature Statistics

December Temperature

St-athan (17km)

Lowest 9 January, 2025

Average 2025

Highest 12 August, 2025

Lowest 21 November, 2025

Average November

Highest 5 November, 2025

Lowest 5 December, 2025

Average December

Highest 1 December, 2025

Climate (2020–Present)

St-athan (17km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025