Average temperatures, rainfall and packing tips for Istanbul, Turkey in September
🌡️ Avg high
27°C
🌙 Avg low
18°C
🌧️ Rainfall
~95 mm
📊 Warmth rank
#4 of 12
September in Istanbul at a glance
September in Istanbul is typically hot, with average daytime highs around 27°C and nights near 18°C. Temperature-wise it sits mid-range for Istanbul (the 4th warmest month).
September is one of the wetter months in Istanbul, with around 95 mm of rain - plan around showers.
What to pack for Istanbul in September
Light, breathable clothing (cotton or linen)
Sun protection: hat, sunglasses and SPF
A refillable water bottle
A rain jacket or umbrella - this is one of the wetter months
Istanbul - year at a glance
HighLow · September highlighted
Is September a good time to visit Istanbul?
🧳 September is one of the most comfortable months to visit Istanbul - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.
In September, Istanbul averages a daytime high of about 27°C and a night-time low of around 18°C, based on recent historical data.
Does it rain in Istanbul in September?
September is one of the wetter months in Istanbul, with around 95 mm of rain - plan around showers.
Is September a good time to visit Istanbul?
September is one of the most comfortable months to visit Istanbul - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.