The Met Office has issued a yellow weather warning covering most of Wales. The forecaster warns “c“Persistent, sometimes heavy rains” could cause disruption in much of the country.

An alert that is in its 6pm on Sunday (Christmas Eve) for an area west of Cardiff and east of Swansea, meaning both cities could avoid the worst of the weather. However, Bridgend and Merthyr Tydfil are in the yellow zone and then, moving north, the zone expands to cover most of mid Wales and much of north Wales, including Blaenau Ffestiniog and Dolgellau in Gwynedd.

The weather service says people in the area can expect the following: “FIt is possible to flood several homes and businesses. Some interruptions to the supply of electricity and other services are possible. Road and rail services are likely to be affected as journey times are longer. “Splash and flooding on roads will likely extend travel times.”

READ NEXT: Man in critical condition after major river rescue in Cardiff

READ NEXT: A man was seriously injured in an incident in Cardiff in which a police cordon cordoned off part of the city center.

Weather service warns of rain on December 24, 2023

The forecast for Wales before Christmas is: “A mild day that will remain mild as the persistent heavy rain finally passes in the south, although it will remain mostly cloudy. Strong winds everywhere with risk of storms on the coast and high areas in the north. Max 13ºC”. Moving to the evening of Christmas Eve, he continues: “The rain moves south, leaving a dry afternoon as the winds slowly decrease overnight. More rain from the west in the morning, bringing heavy showers to the western slopes. Minimum 5 °C”.

In its forecast for Christmas in Wales, the Met Office said: “A wet and cloudy start to Christmas morning with light winds in most areas. Winds slowly increase during the afternoon as heavy rain eases in the evening. The maximum temperature is 13°C.”

The forecaster continues: “Boxing Day will be drier with brighter spells. From Wednesday onwards there will be instability again, sometimes with strong winds and torrential rain.”

There are also some flood warnings in Wales in the run-up to Christmas, particularly for rivers in the upper Towey catchment upstream of Llandeilo (excluding Bran in Llandover); rivers in the upper Teifi catchment upstream of Llanibidder; and the River Wye at Powys.