October in Bilbao averages a daily high of 22.2°C with nights around 12.1°C. Expect roughly 12.1 wet days totalling 99mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bilbao is May–October.
Based on BILBAO AEROPUERTO, SP (4.2km), 1995–2024. 30 years of October data.