Bucharest vs Istanbul

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Istanbul edges ahead as the better destination in September. Istanbul offers 11 hours of daily sunshine with only 7 rain days, while Bucharest sees 9 sunshine hours and 7 rain days.

Bucharest sits in the comfortable travel range at 23°C. Istanbul is also comfortable at 24°C.

For travelers who prioritize dry weather, both cities are equally dry in September. Istanbul receives 2 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Bucharest reaches an average high of 23°C (73°F) and drops to 14°C (57°F) at night during September. The daily temperature range is 9°C, meaning moderate variation throughout the day.

Istanbul averages 24°C (75°F) for the high and 18°C (64°F) for the low, with a daily range of 6°C. The two cities feel quite similar in terms of temperature.

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

Bucharest receives approximately 61 mm of rainfall across 7 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Istanbul sees 46 mm over 7 rain days. Both cities are equally rainy this month.

Both cities share similar humidity levels at 65%.