Istanbul weather
Loading live data…Latest for Istanbul: European (ECMWF): 14° Light rain · American (NOAA GFS): 15° Heavy showers · German (DWD ICON): 15° Thunderstorm.
The weather map: all three models at once
European, American, German side by side around Istanbul and nearby towns.Live rain radar →Hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
10-day forecast, out to 14 days
where the models agree, and where they splitHeading to Istanbul? Istanbul, Turkey, sits at 41.0°N in a temperate climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast Istanbul right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a city break, the rain hours below tell you which days to plan indoors.
Best time to visit Istanbul
The most comfortable time to visit Istanbul is usually April, May, September and October, when daytime highs sit in the pleasant 16-26°C range and the heaviest December rain is behind you.
Istanbul weather by month
what to expect in Istanbul through the year, 1991-2020 normals, Istanbul Florya (WMO)Here is Istanbul's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Istanbul by season.
Istanbul compared with Sydney
30-year averages: daytime highs month by month, rain and sunlightCooler through the year
average daytime high: Istanbul 19°C, Sydney 23°C
Rain over a year
Istanbul 641 mm, Sydney 1,148 mm
Sunlight vs a clear sky
solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)
On 30-year averages Istanbul runs 4°C cooler than Sydney, with every month between −18°C and +12°C. Over a year it gets 44% less rain than Sydney.
Month by month in numbers
| Month | Istanbul | Sydney | Difference | Sunlight, Istanbul | Sunlight, Sydney |
|---|---|---|---|---|---|
| January | 9°C | 27°C | −18°C | 56% | 75% |
| February | 10°C | 28°C | −18°C | 58% | 73% |
| March | 12°C | 26°C | −14°C | 66% | 75% |
| April | 17°C | 24°C | −7°C | 74% | 77% |
| May | 22°C | 22°C | ±0°C | 80% | 79% |
| June | 27°C | 18°C | +9°C | 85% | 74% |
| July | 30°C | 18°C | +12°C | 90% | 80% |
| August | 30°C | 20°C | +10°C | 89% | 82% |
| September | 26°C | 22°C | +4°C | 80% | 82% |
| October | 21°C | 24°C | −3°C | 70% | 77% |
| November | 16°C | 25°C | −9°C | 63% | 74% |
| December | 11°C | 27°C | −16°C | 57% | 74% |
Daytime highs and lows on this page are 1991-2020 averages. Istanbul: station normals from Istanbul Florya (WMO), rain included. Sydney: station normals from Sydney Observatory Hill (WMO), rain included. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. Sydney stands in for Australia here; other cities have their own climate tables.