Chiswick set for its hottest day of the year so far — 35°C expected
23 June 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Today is shaping up to be exceptionally warm in Chiswick, with the Met Office forecasting a high of 35°C, a low of 25°C overnight, and just a 5% chance of rain. UV index is high at 8, meaning sun protection is strongly advised for anyone spending time outdoors.
The forecast is firmly in the category of serious summer heat — the kind that warrants a little extra care, especially for older residents, young children and anyone with respiratory conditions. NHS guidance recommends staying in the shade between 11am and 3pm, keeping windows closed during the day to trap cool air, and drinking water regularly.
For those keen to make the most of the sunshine, Chiswick House and Gardens is an obvious destination, though expect it to be busy. The riverside path along the Thames between Strand-on-the-Green and Kew is a cooler option thanks to the breeze off the water.
The Met Office forecast for Chiswick shows the heat continuing into this evening, with overnight temperatures remaining unusually high at around 25°C.