Istanbul weather averages for holidays in 2017/2018

Check Istanbul weather averages before you book your next holiday in 2017/2018. Today's maximum temperature in Istanbul is expected to be 27°C, while the average maximum temperature in September is 24°C.

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Istanbul weather averages

Check out the Istanbul weather averages before you book your next holiday to Turkey. The warmest months in Istanbul are July and August with an average maximum temperature of 27°C. The sunniest month is July with on average 12 hours of bright sunshine per day. The month with the least number of days with some rain is July with 4 days. The sea is at its warmest in Istanbul in August with an average sea temperature of 24°C.

Maximum daytime temperature (°C)

Hours of sunshine (daily)

Days with some rainfall

Sea temperature (°C)

More weather parameters

Metric (°C / mm)  |  Imperial (°F / inches)

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Istanbul weather today

Here is the weather in Istanbul today, Monday 25th September 2017. Expect broken clouds in Istanbul, Turkey with a maximum temperature of 27°C, low levels of heat & humidity and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 32 kph from the north-east.

  • 27
    °C maximum temperature
  • 19
    °C minimum temperature
  • broken clouds
  • 4
    hours of sunshine
  • 0
    mm of rainfall expected
  • L
    low heat & humidity
  • 32
    kph wind from NE

5-day weather forecast

Metric (°C / mm)  |  Imperial (°F / inches)

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Istanbul holiday weather averages by month

Check Istanbul holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Istanbul weather with the USA

Below the Istanbul weather chart shows maximum daytime temperature for Istanbul, Turkey and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Istanbul, Turkey
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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