Thundery showers expected in Chiswick today — pack an umbrella
28 August 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Friday brings an unsettled end to the August bank holiday week for Chiswick. The Met Office is forecasting thundery showers throughout the day, with a high of 23°C and an overnight low of 17°C — warm enough, but far from the sunshine many will have been hoping for on the final Friday of the month. The chance of rain stands at 60%, and the UV index reaches 5, so some sun protection is still worth carrying even between showers.
With the bank holiday weekend now underway, conditions may catch some residents off guard — particularly those heading out for outdoor plans across the Green or along the Thames. A light waterproof layer is advisable if you're planning to be outside for any length of time. Thunderstorms can arrive and clear quickly, so keep an eye on updates through the day.
For the latest hour-by-hour picture, the Met Office forecast is updated regularly. The weekend outlook will be worth checking before finalising any plans for Saturday and Sunday.