There is a warning for families tonight after hundreds of people have been putting themselves at risk by swimming in toxic water in Derbyshire.
The blue lagoon near Buxton is actually a flooded quarry.
The water there looks similar to the clear blue seas you might expect to find in an exotic foreign location but that is because it contains limestone.
Environmental experts say the water causes skin and eye irritations as well as stomach problems, but families and young swimmers keep on coming. Our correspondent, Matt O'Donoghue, reports
More top news
Apart from a few showers, mainly in the morning, there will be a good deal of dry and bright weather.
Any cloud and rain will clear eastwards initially, leaving brighter conditions but also a scattering of showers through the day.
Rain possibly heavy at times. Relatively mild overnight.