Bucharest vs Istanbul

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Istanbul edges ahead as the better destination in May. Istanbul offers 12 hours of daily sunshine with only 6 rain days, while Bucharest sees 11 sunshine hours and 11 rain days.

Bucharest sits in the comfortable travel range at 23°C. Istanbul is also comfortable at 20°C.

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

Bucharest reaches an average high of 23°C (73°F) and drops to 12°C (54°F) at night during May. The daily temperature range is 11°C, meaning moderate variation throughout the day.

Istanbul averages 20°C (68°F) for the high and 13°C (55°F) for the low, with a daily range of 7°C. The 3°C difference is noticeable but not dramatic.

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

Bucharest receives approximately 71 mm of rainfall across 11 rain days during May. You can expect rain roughly every other day.

Istanbul sees 37 mm over 6 rain days. That makes Istanbul the drier option by 5 rain days and 34 mm of total precipitation.

Both cities share similar humidity levels at 65%.