Istanbul Climate by Month
During winter months (January and December) Istanbul can experience heavy snowfall, but most of winter it has a pleasant average temperature temperature of around 15°C.
Istanbul can best be visited in spring (May and June) or autumn (September and October) with temperatures between 22°C and 30°C. During summer it tends to be to hot to visit the city with average temperatures between 30°C and 35°C.
Throughout the year Istanbul is very windy.
Average day and night temperature
In Istanbul, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 29°C in August to a chilly 10°C in February. Nighttime temperatures can drop, with averages reaching 5°C in February.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
On average, Istanbul receives a reasonable amount of rainfall, with an annual precipitation of 730 mm. The seasons in Istanbul, bring significant changes in precipitation. The wettest month, December, receives high rainfall, with an average of 103 mm of precipitation. This rainfall is distributed across 17 rainy days. In contrast, the driest month, August, experiences much less rainfall, totaling 24 mm over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Istanbul, summer days are longer and more sunny, with daily sunshine hours peaking at 10.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.0 hours per average day.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year in Istanbul ranges from 8°C in February to 25°C in July.
Water temperature over the year
The best time of year to visit Istanbul in Turkey
During the months of May, June, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
August has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 10°C.
December tops the wettest month list with 103 mm of rainfall.
August is the driest month with 24 mm of precipitation.
July is the sunniest month with an average of 318 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
