Heavy rain expected in Chiswick today — pack a coat for Tuesday
19 August 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
After a stretch of warm, largely dry weather, Tuesday 19 August brings a notably wetter outlook for Chiswick. The Met Office forecast shows a high of 24°C and a low of 16°C — still mild for August — but the headline is a 74% chance of rain and the possibility of heavy downpours during the day. UV index remains at 6, so there is still meaningful solar radiation coming through the cloud cover when breaks allow. Met Office forecast
If you are planning outdoor activities — the riverside at Strand-on-the-Green, Chiswick House grounds, or any of the local parks — it would be sensible to check conditions closer to the time and carry a waterproof layer. The temperature stays comfortable indoors and heavy August rain tends to be short-lived, but the probability is high enough to plan around it.
No sunshine-day article is warranted today: the forecast does not meet the five-hour sunshine threshold. Stay up to date at the Met Office website.