The hot spell peaks today: Barnes forecast to hit 33°C
29 July 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
If yesterday's 29°C felt warm, today steps it up further. The Met Office is forecasting a high of 33°C in Barnes on Tuesday, making it the hottest day of the current spell — and one of the hottest days the area is likely to see all summer.
Skies are expected to stay sunny throughout, with no rain forecast and a UV index of 8, classed as very high. The overnight low sits at 19°C, so even after dark it will remain close and warm. Anyone spending time outdoors — in Barnes Pond park, along the towpath or on Barn Elms playing fields — is advised to apply high-factor sun cream, drink plenty of water and try to stay in the shade between roughly 11am and 3pm when UV is at its strongest.
The NHS advises keeping rooms cool by closing curtains on sun-facing windows during the day, and checking in on elderly or vulnerable neighbours who may struggle in the heat.