Istanbul weather in September (Marmara Region, Turkey)

What kind of temperatures can you expect in Istanbul during September? Use this page to get an overview of the month’s weather conditions.

Temperatures

During September, Istanbul experiences perfect weather, with high temperatures and moderate rainfall. Daytime temperatures are expected to be around 25°C, cooling off to about 19°C at night.

Precipitation

Istanbul in September usually receives moderate rainfall, averaging around 51 mm for the month. Climate data suggests that about 6 days will experience rainfall.

Average sunshine

With around 235 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

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 and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

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.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

8/10

Outdoor sports

8/10

Interested in more climate information?

This site 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 travel conditions. Find out where to go with our weather planner.