Best time to visit
Best Time to Visit Istanbul
A city spanning two continents across the Bosphorus, layering Byzantine and Ottoman history with a large, modern metropolis. Few cities anywhere let you cross between Europe and Asia on a short public ferry ride.
Best time to visit: April to May or September to November, avoiding the summer heat and crowds.
Local tip: A short Bosphorus ferry ride is one of the easiest ways to see the city from the water and cross between its European and Asian sides.
Getting around: Istanbul's tram, metro, and ferry network together cover the historic peninsula and both sides of the Bosphorus well.
Good to know: Dress modestly and expect to remove shoes when entering working mosques like the Blue Mosque — headscarves are provided for women if needed.
What to plan your trip around
- Hagia Sophia
A former Byzantine cathedral and Ottoman mosque, now open to visitors, with a vast domed interior.
- Blue Mosque
An early 17th-century mosque known for its six minarets and blue Iznik tile interior.
- Grand Bazaar
One of the world's oldest and largest covered markets, with thousands of shops.
- Topkapi Palace
The former residence of Ottoman sultans for roughly 400 years, now a museum of imperial treasures.
Istanbul weather by month
Istanbul weather by month
Average temperatures and rainfall Istanbul gets in each month (2011–2020). Tap a month for the full breakdown.
| Month | High | Low | Rain | Humidity |
|---|---|---|---|---|
| January | 8°C | 4°C | 81 mm | 83% |
| February | 10°C | 4°C | 60 mm | 82% |
| March | 12°C | 6°C | 49 mm | 79% |
| April | 17°C | 9°C | 47 mm | 75% |
| May | 21°C | 14°C | 50 mm | 75% |
| June | 26°C | 19°C | 42 mm | 71% |
| July | 29°C | 22°C | 23 mm | 66% |
| August | 29°C | 22°C | 20 mm | 67% |
| September | 26°C | 20°C | 54 mm | 67% |
| October | 20°C | 15°C | 62 mm | 76% |
| November | 15°C | 10°C | 53 mm | 79% |
| December | 11°C | 6°C | 81 mm | 82% |
Istanbul through the year
January · 8° / 4°C · 81 mm
- Seasonally, January counts as mid-winter in Istanbul.
- There's little difference between day and night (around 5°C).
April · 17° / 9°C · 47 mm
- Good walking weather for combining Blue Mosque and Hagia Sophia in one day.
- Istanbul is usually about 2°C cooler than Bursa, 90 km away, in April.
July · 29° / 22°C · 23 mm
- Only one month is warmer in Istanbul than July.
- Rain is well below Istanbul's usual level (around 56% less).
October · 20° / 15°C · 62 mm
- In Istanbul, October is mid-autumn.
- Temperatures are falling — expect highs around 5°C lower by November.
The best time to visit Istanbul is April, May and June, when average highs are 17–26°C and rainfall is around 46 mm a month.
At a glance
When to go to Istanbul, season by season
December – February
Cold10° / 5°C · 74 mm
Cool to cold days. Fine for museums and city breaks, less so for the beach.
March – May
Best time17° / 10°C · 49 mm
Pleasant temperatures and relatively little rain: the best window for sightseeing and time outdoors.
June – August
Good28° / 21°C · 28 mm
Comfortable weather overall, with fewer visitors than peak season.
Frequently asked questions
- When is the best time to visit Istanbul?
- For pleasant, fairly dry weather, go to Istanbul in April, May and June. Average highs are then 17–26°C.
- Why is April a good time to visit Istanbul?
- In April, Istanbul averages 17°C by day and 9°C at night, with about 47 mm of rain and 56% cloud cover: warm enough to be outdoors without the peak heat or the wettest weather.
- What is the warmest month in Istanbul?
- August is the warmest month in Istanbul, with average highs of 29°C and lows of 22°C.
- What is the coldest month in Istanbul?
- January is the coldest month in Istanbul: average highs of 8°C, dropping to 4°C at night.
- When does it rain the most in Istanbul?
- January is the wettest month in Istanbul with about 81 mm of rain. The driest is August, with around 20 mm.
- When is the worst time to visit Istanbul?
- January is the least pleasant month in Istanbul, with average highs of just 8°C. It's still fine for museums and fewer crowds.
- How can I check the weather in Istanbul before I travel?
- Compare the live forecast for Istanbul from three independent weather services on WeatherCompare. When they agree, the forecast is more reliable.
Cite or embed this data
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Best time to visit Istanbul. WeatherCompare, 2026 (climate averages: NASA POWER / ERA5, 2011–2020). https://weathercompare.eu/guides/best-time-to-visit/turkey/istanbul
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