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The weather in
Istanbul
See today's weather and the 14-day forecast for Istanbul. Search another place to look ahead instantly.
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Istanbul, Istanbul
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next 24 hours
Rain forecast for Istanbul
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looking ahead in Istanbul
The next 14 days
Istanbul weather
Weather in Istanbul
See the forecast for Istanbul in one clear overview. From temperature and wind to the chance of rain: plan a walk along the Bosphorus or an afternoon exploring the old city with up-to-date information.
Today and the next 14 days
The forecast for Istanbul is updated daily. Check the temperature, wind and chance of rain hour by hour, and use the 14-day outlook to plan ahead and spot which days look best for being outside.
Practical weather notes for Istanbul
Istanbul straddles two continents and two seas, and the Bosphorus strait channels a near-constant breeze that keeps summer heat more bearable near the water than a few streets inland. Weather can differ noticeably between the European and Asian sides on the same day.
Seasons in Istanbul
Summers are warm and mostly dry, while winters are cool and wetter, with occasional snow. Spring and autumn are generally mild and considered the most comfortable seasons for exploring on foot.
Frequently asked questions
How often is the forecast updated?
The live weather data refreshes several times a day, so you're always seeing the latest forecast for Istanbul.
Is the 14-day forecast reliable?
The first few days are usually the most accurate. Further ahead, the forecast mainly shows a trend rather than the exact weather at a specific hour.
What should I check before heading outside?
Look at the combination of rain, wind and feels-like temperature. A short trip can handle a passing shower, but a longer walk or bike ride benefits from a more stable stretch of weather.
climate
Climate in Istanbul by month
Planning a trip to Istanbul? Below are the average daily high and low temperatures and the rainfall for each month, plus the sea temperature. For the coming days, see the forecast above.
| Month | Avg high | Avg low | Rain | Sea |
|---|---|---|---|---|
| January | 9.0°C (48°F) | 3.6°C (38°F) | 109 mm (4.3 in) | 10.3°C (51°F) |
| February | 10.6°C (51°F) | 4.6°C (40°F) | 77 mm (3.0 in) | 8.7°C (48°F) |
| March | 12.2°C (54°F) | 5.4°C (42°F) | 77 mm (3.0 in) | 9.4°C (49°F) |
| April | 16.8°C (62°F) | 8.6°C (47°F) | 56 mm (2.2 in) | 11.2°C (52°F) |
| May | 21.1°C (70°F) | 13.3°C (56°F) | 57 mm (2.2 in) | 14.7°C (58°F) |
| June | 26.0°C (79°F) | 18.2°C (65°F) | 51 mm (2.0 in) | 20.8°C (69°F) |
| July | 28.8°C (84°F) | 20.7°C (69°F) | 31 mm (1.2 in) | 24.9°C (77°F) |
| August | 29.1°C (84°F) | 21.6°C (71°F) | 20 mm (0.8 in) | 24.9°C (77°F) |
| September | 25.6°C (78°F) | 18.2°C (65°F) | 48 mm (1.9 in) | 24.1°C (75°F) |
| October | 20.1°C (68°F) | 13.8°C (57°F) | 55 mm (2.2 in) | 20.2°C (68°F) |
| November | 16.0°C (61°F) | 10.1°C (50°F) | 84 mm (3.3 in) | 16.8°C (62°F) |
| December | 11.4°C (53°F) | 6.4°C (44°F) | 90 mm (3.5 in) | 12.8°C (55°F) |
Source: ERA5 reanalysis via Open-Meteo, 2015-2024; sea temperature: Open-Meteo Marine, 2023-2025. Model averages for a grid cell, not official station records.
Best time to visit Istanbul
The warmest month in Istanbul is August, with an average high of 29.1°C (84°F). The coolest is January, at 9.0°C (48°F). The wettest month is January, with about 109 mm (4.3 in) of rain. Highs of 25°C (77°F) or more are typical from June to September. For sightseeing and walking, with highs between 18 and 27°C (64 to 81°F), May, June, September and October are the most comfortable. The sea is warmest in July, at 24.9°C (77°F), and coolest in February, at 8.7°C (48°F). It is above 21°C (70°F), comfortable for swimming, from July to September.
Climate FAQ
What is the warmest month in Istanbul?
August, with an average high of 29.1°C (84°F) and an average low of 21.6°C (71°F) (averages for 2015-2024).
What is the wettest month in Istanbul?
January, with about 109 mm (4.3 in) of rain. The driest month is August.
When can you swim in the sea in Istanbul?
The sea is above 21°C (70°F) from July to September, and warmest in July at 24.9°C (77°F).
today's tip
Plan your day
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