Could the UK be heading for another scorching heatwave? New 39°C weather model forecasts hint that even hotter days may lie ahead, raising questions about whether this summer's hottest temperature is still to come.

If you thought the recent hot weather was the peak of summer, UK 39c weather models suggest there may be an even bigger heatwave on the way. The recent cooler weather may not last long, as temperatures could rise again in early August and reach up to 39°C in some parts of England.

The UK's hottest day of 2026 so far was recorded on June 26, when Lingwood in Norfolk reached 37.7°C. Now, long range weather models, including the GFS forecast, are pointing to another surge in temperatures. Some forecasts suggest that from late July into early August, several areas could experience more than a week of temperatures above 30°C, with August 6 emerging as the hottest day in the recent times.

London and parts of the South East could see temperatures between 38°C and 39°C, while the Midlands may reach 36°C or 37°C. Counties such as Kent, Surrey, Essex, Hertfordshire, Berkshire, Hampshire, Sussex, Suffolk and Cambridgeshire are also among those most likely to experience extreme heat if the forecast develops as expected. Forecast confidence for specific temperatures that far ahead remains limited.

Could this become the UK's fourth heatwave of the year?

The Met Office expects the rest of July to remain changeable, with a mix of rain, sunshine and above average temperatures. However, its longer-range outlook also points to the possibility of very warm conditions returning around the start of August, although widespread heatwave conditions are not yet guaranteed.

Speaking about the UK's warming trend, Met Office climate information scientist Mike Kendon said, "With warming at around 0.25C per decade since the 1980s, it seems likely this record will be broken again in a matter of years."

What should people expect?

According to Business Fortune, extreme heat can affect travel, rail services and public health. Authorities often advise people to stay hydrated, avoid the strongest afternoon sunshine and check travel updates before setting out if temperatures rise to the predicted levels.

The UK has already experienced an unusually warm summer, with dozens of days exceeding 30°C and three official heatwaves already recorded. If current weather models prove accurate, early August could bring another significant test of the country's infrastructure and heat preparedness. At the same time, meteorologists stress that forecasts several days ahead can still change as newer weather data becomes available.

As August approaches, all eyes will be on updated forecasts. Whether the UK reaches 39°C or not, this summer is continuing to highlight how prolonged periods of extreme heat are becoming an increasingly important part of Britain's changing climate.

 

FAQs

What are UK 39c weather models?

They refer to forecast models that currently indicate parts of the UK could experience temperatures close to 39°C in early August.

Has the Met Office confirmed a 39°C heatwave?

No. The Met Office says warmer conditions are possible, but a widespread heatwave has not yet been confirmed.

Which areas could be hottest?

Current forecasts point to London, the South East and parts of eastern England as the areas most likely to see the highest temperatures.

What qualifies as a heatwave in the UK?

A heatwave is declared when an area records at least three consecutive days meeting or exceeding its local temperature threshold, which varies between 25°C and 28°C depending on the region.

Can long-range weather forecasts change?

Yes. Forecasts beyond several days carry greater uncertainty and are regularly updated as new weather observations become available.