March in Santutxu averages a daily high of 16.8°C with nights around 6.9°C. Expect roughly 12.7 wet days totalling 95.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Santutxu is May–October.
Based on BILBAO AEROPUERTO, SP (5km), 1995–2024. 30 years of March data.