17/12/2025 – Weather in Cornwall – Yellow Weather Warning For Rain

A yellow weather warning for rain has been issued by the Met Office, covering the period from 10:00 today, Wednesday 17th December, until 23:59 tonight.

Heavy rain is expected to cause travel disruption and possible flooding in parts of the warning area, especially following recent very wet weather.

What to Expect Today

The Met Office says a period of rain, heavy at times, will move slowly east across the region throughout Wednesday. The heaviest rainfall is expected over higher ground.

As a result, people may experience:

• Bus and train services being affected, with longer journey times

• Spray and flooding on roads causing delays

• Some interruption to power supplies and other services

• A small number of homes and businesses being flooded

Rainfall totals of 10 to 20mm are likely across much of the warning area. Higher ground could see significantly more, with 40 to 60mm possible over Dartmoor and the hills of south Wales.

The rain is expected to clear eastwards during Wednesday evening and into the early hours of Thursday.

Advice from the Met Office

People are being advised to check whether their property could be at risk of flooding and, if so, to consider preparing a flood plan and an emergency flood kit.

Those travelling are encouraged to check road conditions or bus and train timetables and adjust plans if needed.

The Met Office also advises preparing for potential power cuts by gathering items such as torches, spare batteries, a mobile phone power pack and other essential supplies.

Weather warnings can change quickly, and people are advised to stay up to date with the latest local forecasts.

Why the Warning Is Yellow

The Met Office says the yellow warning reflects a high likelihood of disruption but a low overall impact.

The warning remains in place until just before midnight tonight.