Tirdeunaw Weather Forecast, Swansea SA5 9

Today 14 Dec Wales

A cloudier and windier day compared to Saturday with rain moving into the west and north, sometimes heavy. Glimmers of sunshine further east though where it will remain largely dry. Slightly milder than Saturday, but coastal gales in the northwest. Maximum Temperature 12C.

Tonight 14 Dec Wales

Persistent rain affecting the west and north where localised flooding and disruption is possible. After a mainly dry evening elsewhere, turning increasingly wet overnight with periods of heavy rain. Windy this evening, then winds easing overnight. Staying mild. Minimum Temperature 9C.

Mon 15 Dec Wales

An unsettled day across the country, with persistent rain, some heavy, especially in the south and west. Flooding is possible in places. Remaining mild, with lighter winds than on Sunday. Maximum Temperature 12C.

Tue 16 Dec Wales

Things become more settled on Tuesday. High pressure builds in, giving a drier, brighter day. However, more unsettled, wet and windy conditions return for Wednesday and Thursday. Temperatures above average.

Wed 17 Dec Wales

Things become more settled on Tuesday. High pressure builds in, giving a drier, brighter day. However, more unsettled, wet and windy conditions return for Wednesday and Thursday. Temperatures above average.

Thu 18 Dec Wales

Things become more settled on Tuesday. High pressure builds in, giving a drier, brighter day. However, more unsettled, wet and windy conditions return for Wednesday and Thursday. Temperatures above average.

Fri 19 Dec Wales

Showers or longer spells of rain are likely to continue at first for many parts of the country, perhaps heavy at times, but gradually over the weekend the weather is expected to become more settled. Scotland and Northern Ireland are likely to see this change first, with spells of rain perhaps slower to clear further across the south. Into the following week, high pressure is expected to become more widely established. Winds will be light and clearer skies are likely, however this does not rule out the odd shower, especially around coasts. High pressure and settled weather will result in temperatures falling to closer to average, with overnight frosts and morning fog which could be slow to clear.

Sat 20 Dec Wales

Showers or longer spells of rain are likely to continue at first for many parts of the country, perhaps heavy at times, but gradually over the weekend the weather is expected to become more settled. Scotland and Northern Ireland are likely to see this change first, with spells of rain perhaps slower to clear further across the south. Into the following week, high pressure is expected to become more widely established. Winds will be light and clearer skies are likely, however this does not rule out the odd shower, especially around coasts. High pressure and settled weather will result in temperatures falling to closer to average, with overnight frosts and morning fog which could be slow to clear.

Tirdeunaw Weather Forecast

Today 14 Dec Wales

Tonight 14 Dec Wales

Mon 15 Dec Wales

Tue 16 Dec Wales

Wed 17 Dec Wales

Thu 18 Dec Wales

Fri 19 Dec Wales

Sat 20 Dec Wales

Temperature Forecast Met Office

Temperature Real-Time

Crug-y-Gorllwyn (Carmarthenshire) Radar

National Satellite

National Synoptic

Tirdeunaw Temperature Statistics

December Temperature

Pembrey Sands Samos (29km)

Lowest 4 March, 2025

Average 2025

Highest 12 August, 2025

Lowest 21 November, 2025

Average November

Highest 5 November, 2025

Lowest 4 December, 2025

Average December

Highest 9 December, 2025

Climate (2020–Present)

Pembrey Sands Samos (29km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025