October in Dublin averages a daily high of 14.8°C with nights around 7.6°C. Expect roughly 17.2 wet days totalling 81.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Dublin is June–September.
Based on DUBLIN PHOENIX PARK, EI (5.8km), 1995–2024. 24 years of October data.