July in Cacém averages a daily high of 27.8°C with nights around 18.3°C. Rain is rare — about 1.3 wet days and 2.5mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cacém is May–September.
Based on LISBOA GEOFISICA, PO (14km), 1995–2024. 26 years of July data.