New weather maps indicate that Britain is set for another burst of summer warmth within days, with forecasters predicting temperatures climbing to 26C across parts of southern and eastern England. The latest ECMWF forecast charts show high pressure developing across much of the UK by June 15, delivering largely calm conditions and sunshine to many areas.
Heatwave Forecast Details
Typically, the mercury rarely exceeds 20C in early June in the UK. However, high pressure lingering outside the UK has already driven temperatures soaring in May, with Britain logging its hottest-ever May day at 35.1C in Kew Gardens, southwest London. Meteorologists expect June to follow a similar pattern.
The newest maps for June suggest the mildest air will be focused across the South East of England, East Anglia, and parts of the Midlands, while Scotland and Northern Ireland remain only a few degrees cooler. WXCharts temperature projections reveal widespread highs of 22C to 24C extending from the Midlands through eastern England. Some spots in the South East, including Greater London, could reach 25C or 26C, making them the warmest parts of the country.
Met Office Forecast
The Met Office's mid-range forecast states: "Higher pressure and more settled conditions may begin to become more prevalent, especially in the south." Multiple locations across these counties are forecast to hit 24C to 26C, with little or no rain predicted for many parts.
14 Warmest Counties
- Kent
- Essex
- Suffolk
- Norfolk
- Cambridgeshire
- Hertfordshire
- Bedfordshire
- Buckinghamshire
- Berkshire
- Surrey
- East Sussex
- West Sussex
- Hampshire
- Oxfordshire



