July in Sants-Montjuïc averages a daily high of 28.5°C with nights around 21.3°C. Expect roughly 3 wet days totalling 24.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Sants-Montjuïc is May–July.
Based on BARCELONA AEROPUERTO, SP (11.4km), 1995–2024. 30 years of July data.