January weather forecast and climate
Istanbul, Turkey

Ships along the coast of the port city of Istanbul, Turkey, with a background view of the cityscape
Ships along the coast of the port city of Istanbul, Turkey, with a background view of the cityscape
January is the coldest month of the year in Istanbul, with mostly cloudy and dark skies. The sunshine is at a premium at the peak of the winter, with the sun barely in the sky for a daily 3 hours.
The mercury column drops low to register an average low temperature of 3.3°C (37.9°F). The average high is 8.3°C (46.9°F), and a few days may even see freezing temperatures at 0°C (32°F).
January has the most number of rainy days in a month at 17, and the rainfall, which is icy at times, records 104.1mm (4.1"). Expect foggy mornings, which may last until the afternoon.

What is the coldest month in Istanbul?

With an average high-temperature of 8.5°C (47.3°F) and an average low-temperature of 3.2°C (37.8°F), January is the coldest month.

What is the average temperature in January in Istanbul?

The average high-temperature, in January, in Istanbul, is 8.5°C (47.3°F), while the average low-temperature is 3.2°C (37.8°F).
Average temperature in January - Istanbul, Turkey
  • Average high temperature in January: 8.5°C

The warmest month (with the highest average high temperature) is August (26.7°C).
The month with the lowest average high temperature is January (8.5°C).

  • Average low temperature in January: 3.2°C

The month with the highest average low temperature is August (20°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).

Average rainfall in January - Istanbul, Turkey
  • Average rainfall in January: 105.3mm

The wettest month (with the highest rainfall) is December (122.6mm).
The driest month (with the lowest rainfall) is July (31.6mm).

Average rainfall days in January - Istanbul, Turkey
  • Average rainfall days in January: 17.5 days

The month with the highest number of rainy days is January (17.5 days).
The month with the lowest number of rainy days is July (4.2 days).

Average snowfall days in January - Istanbul, Turkey
  • Average snowfall days in January: 3.6 days

The month with the highest number of snowfall days is February (4.9 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in January - Istanbul, Turkey
  • Average sea temperature in January: 8.4°C

The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (7.8°C).

Average daylight in January / Average sunshine in January - Istanbul, Turkey
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 2.3h

The month with most sunshine is July (Average sunshine: 10.4h).
The month with least sunshine is December (Average sunshine: 2.2h).

Average UV index in January - Istanbul, Turkey
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 1).

deutscheenglishespañolрусский中文