Weather in Istanbul, Turkey in September
In an average September, Istanbul sees a daily high around 25°C and a low around 19°C, based on 1981–2026 of local climate records.
| Average high | 25°C |
|---|---|
| Typical high range | 21°C to 29°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 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
35°C
2017-09-20
Lowest
17°C
2022-09-22
Low
Highest
24°C
2023-09-01
Lowest
12°C
1997-09-26
Feels-like
Highest
41°C
2017-09-20
Lowest
12°C
1997-09-26
Humidity
Highest
19.7 g/m³
2022-09-02
Lowest
6.9 g/m³
1992-09-07
Wind
Highest
55 km/h
1986-09-19
Lowest
8 km/h
1996-09-03
Precip
Wettest
160 mm
2014
Driest
0 mm
1994
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