Weather in central London
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News London has published 6 stories involving BBC Weather, from August 2026 to September 2026. Each one is scored for how well the original reporting stood up, and lists the reports it was written from.
From 20 to 29 September 2026 London will record daily highs of at least 22°C. BBC Weather attributes the warmth to a high‑pressure ridge, and the Met Office forecasts ten consecutive sunny days, meaning residents should prepare for warm, possibly humid conditions.
The Notting Hill Carnival, expected to draw two million attendees, faces a forecast of rain and thunder over the bank holiday weekend from August 29-31. Forecasters warn of potential washouts, particularly on Sunday and Monday.
Residents in Barnet and across London can expect thunderstorms and a week of rain from 18 August, following record-breaking temperatures of 38.1°C on 13 August. The Met Office and BBC Weather forecast cooler conditions, with showers lasting until 27 August, though the bank holiday weekend may stay dry.
Barnet will see its first rainfall in weeks on 17 August, with light showers forecast for the afternoon, BBC Weather reports. A yellow heat health alert remains in place for London until 19 August, as temperatures stay above 20°C even during rain.
Barnet residents face an amber health alert from 3 to 5 August 2026 as temperatures reach 33°C. The UK Health Security Agency warns of higher mortality among older adults and pressure on care services. Cooling measures are advised, with fresher weather expected by midweek.
Barnet has recorded 38 consecutive dry days since 23 June, matching the capital’s drought. The Met Office confirms England and Wales had their driest July on record. Light rain is forecast for 10 August, but experts say prolonged rainfall is needed to ease restrictions.
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