Third UK heatwave increasingly likely as 30C temperatures forecast

Later in the week, however, it is possible that southerly winds could briefly return lifting temperatures a little higher, but there is a lot of uncertainty around this.

The UK Health Security Agency has issued yellow heat health alerts for the East Midlands, East of England, London, south-east and south-west, warning that there is a greater risk to life for vulnerable people as a result of the temperatures.

Unlike the last heatwave, however, the air is expected to be less humid, at least initially. So despite the high temperatures, it may feel a little more comfortable.