Rome vs Barcelona

Rome and Barcelona are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Rome sits in the comfortable travel range at 22°C. Barcelona is also comfortable at 24°C.

For travelers who prioritize dry weather, Rome is the stronger choice in September. Barcelona receives 6 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Rome reaches an average high of 22°C (72°F) and drops to 13°C (55°F) at night during September. The daily temperature range is 9°C, meaning moderate variation throughout the day.

Barcelona averages 24°C (75°F) for the high and 18°C (64°F) for the low, with a daily range of 6°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.

Rome receives approximately 45 mm of rainfall across 4 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Barcelona sees 79 mm over 11 rain days. That makes Rome the drier option by 7 rain days and 34 mm of total precipitation.

Both cities share similar humidity levels at 65%.