14-day forecast — Istanbul
Updated every hour
Mon · Today · 14 Sep
Showers
24°
19°
1.4 mm
Tue · Tomorrow · 15 Sep
Cloudy
23°
19°
10%
Wednesday · 16 Sep
Cloudy
22°
18°
0.5 mm
Thursday · 17 Sep
Showers
24°
18°
0.6 mm
Friday · 18 Sep
Showers
25°
20°
0.7 mm
Saturday · 19 Sep
Sunny
26°
19°
5%
Sunday · 20 Sep
Sunny
26°
20°
5%
Monday · 21 Sep
Sunny
26°
20°
4%
Tuesday · 22 Sep
Sunny
25°
21°
5%
Wednesday · 23 Sep
Sunny
24°
20°
10%
Thursday · 24 Sep
Sunny
24°
20°
6%
Friday · 25 Sep
Cloudy
24°
19°
12%
Saturday · 26 Sep
Cloudy
22°
18°
12%
Sunday · 27 Sep
Sunny
20°
17°
5%
About Istanbul
Where Europe meets Asia — Hagia Sophia, the Grand Bazaar and the Bosphorus.
CountryTurkey
RegionMarmara
ContinentEurope
Time zoneEurope/Istanbul (+03:00)
Latitude41.0082°
Longitude28.9784°
Air qualityFair (EAQI 30)
Climate in Istanbul in October
Averages over 8 years · best time to visitBest time to visit Istanbul: April–October. With good weather, October is a recommended month to visit.
| September | October | November | |
|---|---|---|---|
| Average temperature | ▼ 21°C | 17°C | ▼ 13°C |
| Highest temperature | ▼ 26°C | 21°C | ▼ 17°C |
| Lowest temperature | ▼ 18°C | 14°C | ▼ 10°C |
| Sea temperature | ▼ 24,2°C | 19,9°C | ▼ 16,3°C |
| Rainfall | ▲ 44 mm | 55 mm | ▲ 84 mm |
| Days with rain | ▼ 8 d | 7 d | ▲ 9 d |
| Humidity | ▲ 72% | 76% | ▲ 77% |
| Sunshine hours per day | ▼ 10,9 h | 8,6 h | ▼ 6,9 h |
| Cloud cover | ▲ 13% | 23% | ▲ 30% |
| UV index (midday) | ▼ 7 | 5 | ▼ 3 |
| Day length | 12:28 | 11:06 | 9:54 |
| Our rating | Perfect | Good | Acceptable |
Temperature day by day in October mean + moving average
Rainfall day by day in October mm
UV index day by day in October midday value, clear-sky
Climate averages calculated from the ERA5 archive (8 years; sea temperature from marine reanalysis). UV estimated from solar elevation.
Other destinations in Europe
Data source
Global weather models — international forecasts
The weather for Istanbul is based on global weather models (ECMWF, GFS) and national meteorological institutes around the world. Forecasts update every hour; current measurements every 15 minutes. For destinations with a larger time difference from the UK, local time is shown above.