A warm, sunny Sunday ahead for Chiswick — make the most of it
6 September 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Sunday 6 September looks like one of the better days of the early autumn, with the Met Office forecasting bright sunshine and a high of 25°C across Chiswick. The overnight low sits at a comfortable 18°C, and the chance of rain is a negligible 7%, so there is little reason to keep an umbrella to hand.
The UV index reaches 5 — classed as moderate — so it is worth applying sunscreen if you are planning to spend a stretch of time outdoors, particularly with children. Gardeners, cyclists heading out along the Thames towpath, and anyone with plans for a long lunch in a garden or on a terrace should find conditions close to ideal.
The forecast represents a step up from the 22°C that characterised earlier days in the current fine spell, suggesting the settled weather is holding and perhaps nudging warmer before the season turns. Chiswick House and Gardens, Duke's Meadows and the riverside stretch between Strand-on-the-Green and Kew are all within easy reach for an afternoon walk in the sunshine.
Check the latest forecast before heading out via the Met Office Chiswick forecast.