The ongoing UK heatwave is set to peak on Monday, with temperatures potentially reaching 34°C in parts of Greater London and Bedfordshire — and possibly nudging 35°C.

If temperatures exceed 34°C, it would rank among the top three hottest June days ever recorded. However, it’s unlikely to surpass the all-time June high of 35.6°C, set in 1976.

Festival-goers at Glastonbury have been advised to leave before early Monday to avoid the intense heat, while Wimbledon is expected to experience its hottest opening day in history.

An amber heat-health alert, active since Friday, remains in effect across five regions: London, the East Midlands, East of England, South East, and South West. These areas face heightened pressure on health services and the risk of travel disruptions.

The London Fire Brigade has warned of a "severe" wildfire threat, citing ongoing dry conditions and below-average rainfall. Thomas Goodall, Assistant Commissioner, emphasized the elevated risk due to parched ground and prolonged heat.

Elsewhere, the West Midlands and Yorkshire and Humber are under a yellow alert, indicating a lower but still notable risk.

Health officials have warned that the extreme heat could lead to a rise in heat-related deaths, especially among vulnerable groups. The UK Health Security Agency (UKHSA) advises staying indoors during the hottest part of the day — between 11:00 and 15:00 — and wearing hats, sunglasses, and suncream.

While much of England swelters, Scotland and Northern Ireland are seeing cooler, wetter conditions with temperatures between 17°C and 22°C and some rain expected throughout Monday.

Some southern areas may see overnight lows remaining at 20°C into Tuesday, adding to the strain of prolonged heat. This marks the UK's second official heatwave of the year, triggered when regions meet or exceed specific temperature thresholds for three consecutive days. Photo by Alisdare Hickson, Wikimedia commons.