Istanbul weather in September (Marmara Region, Turkey)
Looking to travel to Istanbul in September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.
In Istanbul the weather in September is generally perfect, with high temperatures and moderate rainfall. Daytime temperatures hover around 25°C, while nights can cool down to about 19°C.
Istanbul in September usually receives moderate rainfall, averaging around 51 mm for the month. Based on our climate data of the past 30 years, about 6 days of rain are anticipated.
The city usually sees around 235 hours of sunlight, indicating many sunny days.
If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Istanbul. May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized Istanbul climate page with graphs.
Istanbul, monthly averages in September
Min Temperature
19°C
Max Temperature
25°C
Water Temperature
23°C
Chance of Rain
20%
Precipitation
51 mm
Rainy days
6 days
Sunshine
235 hours
Percentage Sunshine
65%
Where to go in Turkey in September
Find out more about the weather in Turkey in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Istanbul in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. With a water temperature of around 23°C this is a great month to swim so bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Istanbul.
Our site offers climate and forecast data for every country in the world. Are you going to Turkey? On this website you can find historical weather averages for many cities in Turkey. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
