Istanbul weather

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Usually in October
- 19
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Weather by month
Now Today
- 14
- 5
5-day forecast

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The weather guide for Istanbul, Turkey shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Which is the hottest month in Istanbul?

The hottest time of year in Istanbul is normally July. Expect maximum daytime temperatures to reach 27°C with low heat and humidity.

Which month has the most rain in Istanbul?

In terms of rainfall, December is usually the wettest month in Istanbul with 126mm on average. There are normally 18 days in December with some rain.

When is it sunniest in Istanbul?

The sunniest time of year in Istanbul is normally July with bright sunshine on average for 79% of daylight hours; that's 12 hours of sunshine per day.