Istanbul Weather in September
Türkiye · 30-year monthly averages
🌟 Great time to visit
September in Istanbul is warm, with average daytime highs around 26°C (78°F) and nighttime lows near 17°C (63°F). Expect roughly 43mm of precipitation spread over about 5 rainy days, with little rainfall.
Avg high
26°C
78°F
Avg low
17°C
63°F
Rainfall
43mm
dry
Rainy days
5
days with ≥1mm
🎒 What to pack
- light summer clothing
- sunscreen and sunglasses
September vs the rest of the year
FAQ
- How hot is Istanbul in September?
- September in Istanbul is warm, with average daytime highs around 26°C (78°F) and nighttime lows near 17°C (63°F). Expect roughly 43mm of precipitation spread over about 5 rainy days, with little rainfall.
- Does it rain a lot in Istanbul in September?
- Istanbul sees around 43mm of precipitation in September on average — dry by global standards.
- Is September a good time to visit Istanbul?
- September is one of the best months to visit Istanbul — comfortable temperatures and manageable rainfall.