October in Derry averages a daily high of 13.6°C with nights around 8.9°C. Expect roughly 22.1 wet days totalling 120.6mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Derry is June–September.
Based on MALIN HEAD, EI (41.6km), 1995–2024. 25 years of October data.