The Met Office has issued a stark warning that this coming Sunday (27 July 2026) could bring 'significant' rainfall to Cornwall, with potentially severe consequences for residents and holidaymakers. Latest maps indicate the South West of England will bear the brunt of the downpours, with the heaviest rain expected over the Cornish peninsula.
While specific totals are yet to be confirmed, the outlook suggests persistent and heavy rain throughout Sunday, posing a challenge for those on the roads and in low-lying areas. Driving conditions may deteriorate significantly, visibility could be reduced, and there's a risk of surface water flooding on major routes. Coastal regions, already popular with tourists this summer, can also expect stronger winds, although gusts are currently predicted to remain moderate, below 25 mph.
Meanwhile, the rest of the UK faces a mixed bag of weather for Sunday. Northern England and Scotland will experience a blend of sunshine and scattered showers, with temperatures slightly cooler than average – around 14-17°C. Wales and Northern Ireland can expect largely cloudy conditions with light rain possible in western areas, with temperatures ranging from 15-18°C.
The Met Office urges those in affected areas to stay up-to-date with the latest forecasts, particularly in Cornwall. Practical advice includes checking local flood alerts, allowing extra time for journeys, and being mindful of slippery surfaces. Outdoor activities planned for Sunday in Cornwall should be reconsidered or adapted to account for the adverse weather.
Looking ahead, conditions are expected to improve by Monday, with a return to more typical summer weather featuring a mix of sunshine and occasional showers across much of the UK. However, preparations remain crucial for Sunday's heavy rain in Cornwall.