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 April
Averages over 8 years · best time to visitBest time to visit Istanbul: April–October. With good weather, April is a recommended month to visit.
| March | April | May | |
|---|---|---|---|
| Average temperature | ▲ 9°C | 12°C | ▲ 17°C |
| Highest temperature | ▲ 13°C | 17°C | ▲ 22°C |
| Lowest temperature | ▲ 5°C | 9°C | ▲ 13°C |
| Sea temperature | ▲ 9,3°C | 11,4°C | ▲ 15,2°C |
| Rainfall | ▼ 76 mm | 60 mm | ▲ 62 mm |
| Days with rain | ▼ 11 d | 9 d | → 9 d |
| Humidity | ▼ 73% | 72% | ▼ 71% |
| Sunshine hours per day | ▲ 7,8 h | 9,8 h | ▲ 11,5 h |
| Cloud cover | ▼ 35% | 27% | ▼ 20% |
| UV index (midday) | ▲ 6 | 9 | ▲ 10 |
| Day length | 11:57 | 13:20 | 14:29 |
| Our rating | Poor | Good | Good |
Temperature day by day in April mean + moving average
Rainfall day by day in April mm
UV index day by day in April 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.