Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the StoryShift weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
A UK heatwave is officially defined as three or more consecutive days with maximum temperatures reaching a specific threshold per county—typically 25–28°C. The live ranking above shows current heatwave alerts and durations across the UK.
When do UK heatwaves usually happen?
Most UK heatwaves occur between late June and early September, with July and August the most likely months. The Met Office issues heat-health warnings when temperatures pose a risk to vulnerable people. School holidays (late July to early September) often coincide with the hottest spells, so plan travel and outdoor activities for mid-morning or late evening to avoid peak heat.
How long will the current heatwave last?
Duration varies: some heatwaves last 3–5 days, others stretch to a week or more. Check the 10 Day Weather Forecast UK for your area, and monitor the Moderate Rainfall Warning as thunderstorms sometimes follow a heatwave. For longer-range outlooks, see the UK weather hub.
How long is the UK heatwave going to last?
Check the live ranking above for current heatwave duration. Most last 3–7 days; occasional prolonged spells reach 10+ days. Always refer to official Met Office warnings for your region.
Where can I see a UK heatwave map?
The Met Office provides real-time temperature maps and heat-health alert zones. You can also find unofficial but current heatwave maps via the uk heatwave reddit community or the BBC Weather site.
What should I pack for a UK heatwave?
Light, breathable clothing (cotton/linen), a reusable water bottle, sun protection (hat, SPF 50+), and a portable fan. If travelling by train or tube, carry a small towel and extra water—overground services can get very warm.