Severe rainstorm hits UK: Could flood South Wales and disrupt travel – Are you prepared?

Residents across parts of England and Wales are bracing for a period of intense rainfall and strong winds starting Monday, December 1, 2025. Meteorologists have warned that the early week weather could lead to flooding, travel disruptions, and potential power outages in some areas.

The UK Met Office has issued an amber alert for South Wales, while yellow warnings extend across north-west England, southwest Scotland, and central and northern parts of Wales. Officials caution that the heaviest rain could trigger surface water flooding, river overflow, and even landslides in certain regions.

What to Expect This Week

Forecasters say an area of persistent, heavy rain will sweep eastward across the north-west of England on Monday. In Cumbria, brief intervals of lighter rain may occur during the afternoon, but more intense showers are expected overnight. By early Tuesday, the rain is forecast to clear.

South Wales faces a particularly challenging start to the week. Met Office Chief Forecaster Rebekah Hicks notes that rainfall in higher ground areas could reach up to 120mm in a single day, with most hills expecting 60-80mm, and lower areas receiving 20-40mm. These volumes could result in “fast-flowing or deep floodwaters,” posing serious risks to life and property.

Richard Preece, Duty Tactical Manager at Natural Resources Wales, emphasized the importance of preparation. With rivers already swollen and the ground saturated, communities are urged to monitor flood alerts, avoid walking or driving through floodwaters, and create emergency kits with essentials such as important documents, medication, and valuables.

Travel and Power Disruptions

Transport services are likely to be affected, with bus and train schedules potentially disrupted and journey times delayed. Drivers are advised to check road conditions before travelling and to allow extra time for their trips. High winds, particularly in coastal and elevated areas, may also result in fallen trees or temporary power outages.

The British Geological Survey has highlighted that rainfall levels forecast for Monday have previously triggered landslides in Wales. Steep slopes and areas with already saturated soil are particularly at risk, which could disrupt both local roads and longer travel routes.

What Comes Next

Following Monday’s heavy rain, the UK is expected to experience a changeable week with a mixture of showers, rain, and occasional sunny spells. Low-pressure systems will continue to influence the weather, particularly across England and Wales.

Residents are encouraged to stay updated through the Met Office and Natural Resources Wales websites for real-time alerts and guidance.

FAQ

Q: Which areas are most at risk of flooding this week?
A: South Wales faces the highest risk, with amber warnings in place. Parts of north-west England, southwest Scotland, and central and northern Wales also have yellow warnings.

Q: How much rain is expected?
A: Heavy rainfall is forecast to reach up to 120mm in high ground areas of South Wales, 60-80mm on hills, and 20-40mm at lower levels.

Q: What should I include in an emergency flood kit?
A: Essentials include important documents, medication, valuables, food and water supplies, and a means of communication.

Q: Are transport services affected?
A: Yes. Bus and train schedules may face delays or cancellations, and driving conditions may be hazardous.

Q: How can I stay informed about local flood alerts?
A: Sign up for free alerts via the Natural Resources Wales website or check the Met Office flood warning pages regularly.