October in Colchester averages a daily high of 15.5°C with nights around 7°C. Expect roughly 12 wet days totalling 54.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Colchester is June–September.
Based on EAST BERGHOLT, UK (11.4km), 1995–2024. 22 years of October data.