Another hot one today: sunny in Barnes with a high of 35°C
26 June 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Today is shaping up to be one of the hottest of the year so far, with the Met Office forecasting clear sunshine and a high of 35°C in Barnes. The overnight low sits at 23°C, meaning there is little relief even after dark, and the UV index reaches 9 — firmly in the 'very high' band, where unprotected skin can burn in as little as 15 minutes.
With a mere 6% chance of rain, conditions will feel more Mediterranean than south-west London throughout the day. If you're planning to use Barnes Common, the riverside towpath or Leg o' Mutton nature reserve, the early morning or early evening are the most comfortable windows.
For those heading outdoors, the NHS advises staying in the shade during the hottest part of the day (11am–3pm), keeping well hydrated and applying SPF 30 or higher sunscreen. Residents with elderly neighbours or those with young children are encouraged to check in — heat this intense can be harder to manage for the very young and very old.
Forecast data is from the Met Office.