Cwmtaf Weather Forecast, Merthyr Tydfil CF48 2

Today 13 May Wales

Any early mist and fog patches clearing to give a mostly fine day, with warm sunny spells. Heavy, possibly thundery showers breaking out in the south during the afternoon. Feeling warm with light winds, though gusty around any heavy downpours. Maximum Temperature 24C.

Tonight 13 May Wales

Any heavy, possibly thundery showers soon easing this evening to leave some late sunshine. Drier overnight with variable amounts of cloud and clear spells. Turning chilly with a touch of frost. Minimum Temperature 6C.

Wed 14 May Wales

A fine day with plenty of May sunshine. Dry throughout and feeling warm in the sunshine with light winds. Maximum Temperature 24C.

Thu 15 May Wales

Staying fine and settled through the remainder of the week. Dry with plenty of sunshine by day, and clear skies overnight. Temperatures staying above average, but with some cooler nights.

Fri 16 May Wales

Staying fine and settled through the remainder of the week. Dry with plenty of sunshine by day, and clear skies overnight. Temperatures staying above average, but with some cooler nights.

Sat 17 May Wales

Staying fine and settled through the remainder of the week. Dry with plenty of sunshine by day, and clear skies overnight. Temperatures staying above average, but with some cooler nights.

Sun 18 May Wales

Mostly dry and largely sunny conditions are expected to continue for the vast majority over the next several days as a slow-moving area of high pressure remains dominant. It will continue to be warm or very warm for many, especially in the west, but it will be remain cooler in the east, especially along coasts, with some coastal areas seeing persistent low cloud at times, accompanied by a brisk breeze off the North Sea. There is an increasing chance that conditions will turn more unsettled from late next week though, as areas of rain and strengthening winds threaten from the west and/or south (the latter bringing a risk of thunderstorms). This would most likely to be accompanied by temperatures dropping nearer to average for the time of year.

Mon 19 May Wales

Mostly dry and largely sunny conditions are expected to continue for the vast majority over the next several days as a slow-moving area of high pressure remains dominant. It will continue to be warm or very warm for many, especially in the west, but it will be remain cooler in the east, especially along coasts, with some coastal areas seeing persistent low cloud at times, accompanied by a brisk breeze off the North Sea. There is an increasing chance that conditions will turn more unsettled from late next week though, as areas of rain and strengthening winds threaten from the west and/or south (the latter bringing a risk of thunderstorms). This would most likely to be accompanied by temperatures dropping nearer to average for the time of year.

Cwmtaf Weather Forecast

Today 13 May Wales

Tonight 13 May Wales

Wed 14 May Wales

Thu 15 May Wales

Fri 16 May Wales

Sat 17 May Wales

Sun 18 May Wales

Mon 19 May Wales

Temperature Forecast Met Office

Temperature Real-Time

Crug-y-Gorllwyn (Carmarthenshire) Radar

National Satellite

National Synoptic

Cwmtaf Temperature Statistics

May Temperature

Sennybridge (34km)

Lowest 9 January, 2025

Average 2025

Highest 1 May, 2025

Lowest 8 April, 2025

Average April

Highest 30 April, 2025

Lowest 6 May, 2025

Average May

Highest 1 May, 2025

Climate (2020–Present)

Sennybridge (34km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025