Average temperature: 8°C
Highest temperature: 10°C
Lowest temperature: 6°C
Chances of rain: Showers are common
What to wear: Winter takes over Istanbul in December. The city is cold and wet, with temperatures falling 6°C or below in parts away from the sea. Warm clothes are needed to keep out the cold weather and ensure you also carry an umbrella to combat the rain.
What to look out for: It gets colder as you move away from the sea in Istanbul in December. Stay closer to the sea if you're not used to freezing temperatures.