October in Brentwood averages a daily high of 15.7°C with nights around 7.6°C. Expect roughly 13.5 wet days totalling 62.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Brentwood is June–September.
Based on WRITTLE, UK (15km), 1995–2024. 29 years of October data.