Weather in Istanbul in September
Istanbul, Türkiye averages a high of 24.4°C (75.9°F) and low of 18.6°C (65.5°F) in September, with 6 rain days and 10.9 hours of daily sunshine. Travel score: 86.6/100 (Excellent). The best time to visit Istanbul is July.
High
24°C76°F
Low
19°C65°F
🌧️
6
rain days
☀️
10.9
hrs/day sunshine
💧
70%
humidity
87— Excellent
September in Istanbul is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Istanbul?
How much does it rain in Istanbul in September?
Istanbul receives an average of 46.3mm of rainfall across 6 rainy days in September. The annual total is 670.1mm.
What should I pack for Istanbul in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Türkiye in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31