Pen-y-Darren Weather Forecast, Merthyr Tydfil CF47 9

Today 1 Dec Wales

A murky start for most, as a weather system pushes northeastwards bringing widespread and prolonged outbreaks of rain, with heavy downpours and strong gusty winds likely. Conditions worst felt in the south, with coastal gales and flooding possible. Feeling mild. Maximum Temperature 13C.

Tonight 1 Dec Wales

Wet and windy weather persisting through the evening with further heavy downpours likely. Overnight, winds will gradually ease, with cloud and rain clearing to the northeast, though scattered showers feed into western parts thereafter, these blustery at times. Minimum Temperature 7C.

Tue 2 Dec Wales

A brighter start for many, though scattered showers continue in the west. These becoming more frequent and widespread through the afternoon, with blustery and perhaps thundery downpours likely. Maximum Temperature 10C.

Wed 3 Dec Wales

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Thu 4 Dec Wales

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Fri 5 Dec Wales

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Sat 6 Dec Wales

Likely a continuation of the unsettled conditions seen for much of the week with further showers or some longer spells of rain affecting much of the country. On Saturday a frontal zone is expected to move east and this could bring a spell of locally heavy rain, particularly on hills exposed to the strong southerly winds. Behind this turning brighter but with showers, some of which could be heavy and thundery. Its possible we could then see yet more organised, locally heavy rain move across most areas on Monday. Generally temperatures will be close to average, but it will likely feel quite chilly in the often wet and breezy conditions. However we are unlikely to see much in the way of frost or fog in this unsettled spell.

Sun 7 Dec Wales

Likely a continuation of the unsettled conditions seen for much of the week with further showers or some longer spells of rain affecting much of the country. On Saturday a frontal zone is expected to move east and this could bring a spell of locally heavy rain, particularly on hills exposed to the strong southerly winds. Behind this turning brighter but with showers, some of which could be heavy and thundery. Its possible we could then see yet more organised, locally heavy rain move across most areas on Monday. Generally temperatures will be close to average, but it will likely feel quite chilly in the often wet and breezy conditions. However we are unlikely to see much in the way of frost or fog in this unsettled spell.

Pen-y-Darren Weather Forecast

Today 1 Dec Wales

Tonight 1 Dec Wales

Tue 2 Dec Wales

Wed 3 Dec Wales

Thu 4 Dec Wales

Fri 5 Dec Wales

Sat 6 Dec Wales

Sun 7 Dec Wales

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Pen-y-Darren Temperature Statistics

December Temperature

Sennybridge (38km)

Lowest 9 January, 2025

Average 2025

Highest 11 July, 2025

Lowest 20 November, 2025

Average November

Highest 5 November, 2025

Lowest

Average December

Highest

Climate (2020–Present)

Sennybridge (38km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025