Weather in Istanbul in September
In an average September, Istanbul sees a daily high around 24°C and a low around 19°C, based on 1980–2026 of local climate records.
| Average high | 24°C |
|---|---|
| Typical high range | 20°C to 27°C |
| Average low | 19°C |
| Typical low range | 16°C to 21°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
32°C
2017-09-20
Lowest
16°C
2022-09-22
Low
Highest
24°C
2024-09-14
Lowest
13°C
1997-09-27
Feels-like
Highest
39°C
2017-09-20
Lowest
13°C
1997-09-27
Humidity
Highest
19.5 g/m³
2018-09-02
Lowest
7.5 g/m³
2004-09-10
Wind
Highest
45 km/h
2014-09-23
Lowest
6 km/h
1980-09-11
Gust
Highest
83 km/h
2014-09-23
Lowest
13 km/h
1989-09-27
Precip
Wettest
119 mm
2008
Driest
2 mm
1984
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