UK to see 35C highs through next week as heatwave continues

On Thursday, temperatures exceeded 34C for the eighth day this year, breaking the previous record of seven days set in 1976 and 2020. The current heatwave, the third of the year, began earlier this week.

Weekend outlook A north-easterly breeze on Saturday is expected to bring cooler air from the North Sea to parts of the country. Southern and eastern areas are still projected to reach heatwave thresholds. Amber and yellow heat health warnings issued by the UK Health Security Agency remain in place across large parts of England until 21:00 BST on Sunday.

Temperature records Thursday's peak of 35.5C at Wisley in Surrey was the highest reading so far in this heatwave. Wales reached 31.3C at Bute Park in Cardiff, Scotland hit 29.3C at Charterhall, and Northern Ireland recorded 27.5C at Killowen. Friday temperatures are expected to peak between 34C and 35C in Berkshire, Wiltshire, Hampshire, Oxfordshire, and eastern Wales.

The Met Office stated that eight days above 34C have occurred in 2026, two in May, four in June, and two so far in July. June's heatwave produced a national high of 37.7C in Lingwood, Norfolk. Wales set a June record of 35.9C in Cardiff, and Northern Ireland equalled its June record with 30.8C in Castlederg.

Health and pollen effects The UK Health Security Agency said the alerts indicate significant impacts are likely on health and social care services, especially for people aged 65 and over, the very young, and those with existing health conditions. High grass and weed pollen levels are also affecting hay fever sufferers.

Dry weather, light winds, and an easterly flow from Friday are expected to keep concentrations elevated through the weekend.