Madrid vs Porto

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Madrid edges ahead as the better destination in September. Madrid offers 11 hours of daily sunshine with only 4 rain days, while Porto sees 10 sunshine hours and 6 rain days.

Madrid sits in the comfortable travel range at 26°C. Porto is also comfortable at 24°C.

For travelers who prioritize dry weather, Madrid is the stronger choice in September. Madrid receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Madrid reaches an average high of 26°C (79°F) and drops to 14°C (57°F) at night during September. The daily temperature range is 12°C, meaning significant temperature swings between day and night.

Porto averages 24°C (75°F) for the high and 16°C (61°F) for the low, with a daily range of 8°C. The 2°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Madrid receives approximately 21 mm of rainfall across 4 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Porto sees 64 mm over 6 rain days. That makes Madrid the drier option by 2 rain days and 43 mm of total precipitation.

Both cities share similar humidity levels at 65%.