Heavy rain possible in Chiswick today — cloudy with a high of 25°C
5 August 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
After the recent hot spell, Tuesday 5 August brings a markedly different picture for Chiswick: cloudy skies, a high of 25°C and a 73% chance of rain, with heavy rain possible at points during the day. The overnight low will drop to around 15°C.
The UV index remains at 7 — still in the high range — so if the cloud breaks, sun protection is still worth considering, particularly at lunchtime.
With sunshine unlikely to reach the five-hour threshold needed for any kind of outdoor leisure forecast, this is firmly a day to keep a coat or umbrella handy. Anyone with plans in Chiswick's parks or along the river towpath may want to build in some flexibility. The Met Office forecast is the best place to track how the rain evolves through the day, as timing and intensity can shift. Temperatures remain well above the seasonal average for early August.