Overview

• Weather maps from WX Charts and Netweather forecast peak temperatures of around 29C on June 11–12, with some models suggesting a brief spike to 30C in southeast England.
• The heat is driven by an Iberian jet stream funneling warm air from Spain under a developing ridge of high pressure over the UK.
• The northwest is expected to remain wetter and windier than the south and southeast throughout the hot spell, with the rest of the country seeing a mix of rain and sunshine.
• The Met Office warns of the possibility of severe or isolated thunderstorms in the southeast as humid air clashes with incoming low-pressure fronts.
• Long-range forecasts show high pressure building from the south by late June, likely bringing drier spells to southern areas while northern and western regions stay unsettled.