Weather in Istanbul in December
December in Istanbul is cool with average temperatures around 8.0°C (46.4°F). Moderate rainfall of 82mm spread over 12 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
10.3°C
50.5°F
Low
5.7°C
42.3°F
Precipitation
82 mm
3.2 inches
~12 rainy days
Conditions
Humidity
83%
Comparison to Adjacent Months
December is 4.5°C cooler than November.