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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Report weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
No heatwave is forecast for the UK within the next 14 days; maximum temperatures are expected to remain below 20°C across most regions, due to a persistent low-pressure system bringing unsettled weather and the possibility of a storm to hit Britain this weekend.
When is the next heatwave likely?
Based on historical data, the first heatwave of the year typically occurs between mid-June and mid-July. For 2026, long-range models suggest a higher probability of hot spells from late June onward, but no specific date can be confirmed yet. The 10 Day Weather Forecast UK shows no heatwave conditions in the immediate outlook.
How are UK heatwaves defined?
The Met Office defines a heatwave as at least three consecutive days with daily maximum temperatures meeting or exceeding a regional threshold. These thresholds range from 25°C in London to 28°C in parts of southeast England. For the rest of the UK, the threshold is typically 25°C or 27°C depending on location. A UK weather hub provides regular updates on current conditions.
Will there be a heatwave this month?
No. Current forecasts show below-average temperatures and frequent rain for at least the next two weeks. The Moderate Rainfall Warning is in effect for several areas. A heatwave is not expected until at least late May or June 2026.
How long do UK heatwaves usually last?
Most UK heatwaves last 3 to 7 days, though extended spells of 10 days or more have occurred, such as during the July 2022 heatwave. Short bursts of 3–4 days are more common, often followed by thunderstorms.
When will it start getting warmer in the UK in 2026?
Temperatures typically begin to rise in April, but sustained warmth (above 20°C) usually arrives in mid-May. The current amber snow warning shows winter conditions persist. Warmer weather is not expected until May.