Average temperatures, rainfall and packing tips for Istanbul, Turkey in January
January in Istanbul is typically cool, with average daytime highs around 10°C and nights near 5°C. It is usually the coldest month of the year in Istanbul.
January is one of the wetter months in Istanbul, with around 110 mm of rain - plan around showers.
If your dates are flexible, the most comfortable months in Istanbul are usually April, May, June, August, September and October.
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In January, Istanbul averages a daytime high of about 10°C and a night-time low of around 5°C, based on recent historical data. That makes it the coldest month of the year there.
January is one of the wetter months in Istanbul, with around 110 mm of rain - plan around showers.
January is a workable time to visit Istanbul, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Istanbul are usually April, May, June, August, September and October.