Istanbul vs Bucharest

Istanbul and Bucharest are closely matched in October. 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.

Istanbul sits in the comfortable travel range at 19°C. Bucharest is also comfortable at 17°C.

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

Istanbul reaches an average high of 19°C (66°F) and drops to 14°C (57°F) at night during October. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Bucharest averages 17°C (63°F) for the high and 8°C (46°F) for the low, with a daily range of 9°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 October.

Istanbul receives approximately 78 mm of rainfall across 9 rain days during October. You can expect rain roughly every other day.

Bucharest sees 52 mm over 7 rain days. That makes Bucharest the drier option by 2 rain days and 26 mm of total precipitation.

Both cities share similar humidity levels at 65%.