16-day forecast — Istanbul
Updated every hour
Fri · Today
Clear
+22°
+16°
7%
Wind22 km/h NE
Gusts33 km/h
UV index5 – Moderate
Chance of rain7%
Sunrise06:54
Sunset18:56
Sat · Tomorrow
Cloudy
+23°
+18°
22%
Wind27 km/h NE
Gusts38 km/h
UV index5 – Moderate
Chance of rain22%
Sunrise06:55
Sunset18:55
Sunday 27/9
Showers
+22°
+19°
1.0 mm
Wind27 km/h NE
Gusts36 km/h
UV index5 – Moderate
Chance of rain51%
Sunrise06:56
Sunset18:53
Monday 28/9
Showers
+21°
+18°
1.0 mm
Wind25 km/h N
Gusts31 km/h
UV index5 – Moderate
Chance of rain41%
Sunrise06:57
Sunset18:51
Tuesday 29/9
Partly cloudy
+21°
+18°
0.2 mm
Wind23 km/h N
Gusts30 km/h
UV index5 – Moderate
Chance of rain18%
Sunrise06:58
Sunset18:50
Wednesday 30/9
Showers
+20°
+18°
0.8 mm
Wind23 km/h N
Gusts28 km/h
UV index5 – Moderate
Chance of rain48%
Sunrise06:59
Sunset18:48
Thursday 1/10
Showers
+20°
+18°
2.2 mm
Wind24 km/h N
Gusts29 km/h
UV index5 – Moderate
Chance of rain62%
Sunrise07:00
Sunset18:46
Friday 2/10
Cloudy
+21°
+17°
11%
Wind19 km/h NE
Gusts27 km/h
UV index6 – High
Chance of rain11%
Sunrise07:01
Sunset18:44
Saturday 3/10
Clear
+19°
+17°
11%
Wind18 km/h NE
Gusts27 km/h
UV index5 – Moderate
Chance of rain11%
Sunrise07:02
Sunset18:43
Sunday 4/10
Clear
+21°
+17°
8%
Wind15 km/h NE
Gusts26 km/h
UV index6 – High
Chance of rain8%
Sunrise07:03
Sunset18:41
Monday 5/10
Partly cloudy
+21°
+17°
11%
Wind11 km/h NE
Gusts13 km/h
UV index6 – High
Chance of rain11%
Sunrise07:04
Sunset18:40
Tuesday 6/10
Showers
+21°
+17°
0.3 mm
Wind21 km/h N
Gusts27 km/h
UV index5 – Moderate
Chance of rain36%
Sunrise07:06
Sunset18:38
Wednesday 7/10
Partly cloudy
+21°
+17°
0.3 mm
Wind27 km/h NE
Gusts36 km/h
UV index5 – Moderate
Chance of rain25%
Sunrise07:07
Sunset18:36
Thursday 8/10
Cloudy
+18°
+16°
10%
Wind27 km/h NE
Gusts34 km/h
UV index5 – Moderate
Chance of rain10%
Sunrise07:08
Sunset18:35
Friday 9/10
Showers
+20°
+16°
3.0 mm
Wind24 km/h SE
Gusts30 km/h
UV index4 – Moderate
Chance of rain—
Sunrise07:09
Sunset18:33
Saturday 10/10
Showers
+20°
+16°
2.9 mm
Wind21 km/h SE
Gusts28 km/h
UV index4 – Moderate
Chance of rain—
Sunrise07:10
Sunset18:31
About Istanbul
Metropole zwischen Europa und Asien am Bosporus.
CountryTurkey
RegionMarmararegion
ContinentAsia
Time zoneEurope/Istanbul (+03:00)
Latitude41.0082°
Longitude28.9784°
Air qualityGood (EAQI 20)
Climate in Istanbul in September
Normals 8 years · best time to visit · Open-MeteoBest time to visit Istanbul: April–October. With perfect weather, September is a recommended month to visit.
| August | September | October | |
|---|---|---|---|
| Average temperature | ▼ 25°C | 21°C | ▼ 17°C |
| Highest temperature | ▼ 30°C | 26°C | ▼ 21°C |
| Lowest temperature | ▼ 21°C | 18°C | ▼ 14°C |
| Sea temperature | ▼ 25,2°C | 24,2°C | ▼ 19,9°C |
| Precipitation | ▲ 19 mm | 44 mm | ▲ 55 mm |
| Days with precipitation | ▲ 3 d | 8 d | ▼ 7 d |
| Humidity | ▲ 65% | 72% | ▲ 76% |
| Sunshine hours per day | ▼ 12,6 h | 10,9 h | ▼ 8,6 h |
| Cloud cover | ▲ 8% | 13% | ▲ 23% |
| UV index (midday) | ▼ 10 | 7 | ▼ 5 |
| Day length | 13:46 | 12:28 | 11:06 |
| Our rating | Perfect | Perfect | Good |
Temperature day by day in September mean + moving average
Precipitation day by day in September mm
UV index day by day in September midday value, clear-sky
Climate normals calculated from Open-Meteo (ERA5 archive 8 years, sea temperature Marine API). UV estimated from solar elevation.
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Weather Istanbul
Data source
Global weather models — international forecasts
Weather in Istanbul (Turkey): current conditions plus a 24-hour and 16-day forecast for planning your trip. Right now on the ground: +17°, clear, wind 9 km/h. Over the next 7 days temperatures range between 16 and 23 °C, with 2 fine days and 5 mm of rain. Climatologically, highs in September are around 26 °C, with a sea temperature of about 24 °C. Best time to visit: usually April–October. Local time (time zone Europe/Istanbul). Data from Open-Meteo and WeatherAPI.