Istanbul vs Cancun

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Istanbul edges ahead as the better destination in September. Istanbul offers 4 hours of daily sunshine with only 4 rain days, while Cancun sees 4 sunshine hours and 12 rain days.

Istanbul sits in the comfortable travel range at 22°C. Cancun runs hot at 30°C.

For travelers who prioritize dry weather, Istanbul is the stronger choice in September.

Istanbul 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.

Cancun averages 30°C (86°F) for the high and 23°C (73°F) for the low, with a daily range of 7°C. There is a notable 8°C gap between the two cities, so expect a very different feel.

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

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

Cancun sees 140 mm over 12 rain days. That makes Istanbul the drier option by 8 rain days and 95 mm of total precipitation.

Humidity also differs: Istanbul averages 65% while Cancun sits at 78%. Cancun will feel muggier, especially at higher temperatures.