Average temperatures, rainfall and packing tips for Istanbul, Turkey in December
December in Istanbul is typically cool, with average daytime highs around 12°C and nights near 7°C. It is one of the cooler months of Istanbul's year.
December is typically the wettest month of the year in Istanbul, with around 144 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 December, Istanbul averages a daytime high of about 12°C and a night-time low of around 7°C, based on recent historical data.
December is typically the wettest month of the year in Istanbul, with around 144 mm of rain - plan around showers.
December 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.