Istanbul weather in October 2025
Istanbul weather in October 2025
Day
19 °C
Night
12 °C
Sea
19 °C
Precipitation
78 mm
in month
Rainy days
8 days
in month
Daylight
11 hours
average
Sunshine
6 hours
average
Humidity
78 %
Day
19 °C
Night
12 °C
Sea
19 °C
Precipitation
78 mm
in month
Rainy days
8 days
in month
Daylight
11 hours
average
Sunshine
6 hours
average
Humidity
78 %
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Weather overview for Istanbul
Weather overview
In Istanbul in October, the average air temperature ranges from 19 °C (67 °F) during the day to 12 °C (54 °F) at night. There are 8 days of rain on average, where the rainfall is 78 mm (3.06 in).
Are there good conditions to visit in Istanbul in October?
There are good conditions for visiting in October in Istanbul. You can expect just 8 days of rain during the month, taking an umbrella is not necessary. There are some people, who may feel a slight chill at 19 °C (67 °F), but others will feel perfectly fine. A sea temperature of 19 °C (65 °F) can seem colder to some, but others will call it refreshing. The temperature of 12 °C (54 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the air temperature in Istanbul in October at night?
The average night temperature in Istanbul in October is 12 °C (54 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
What temperature can I expect during the day in Istanbul in October?
In Istanbul in October, the average daily temperatures will be 19 °C (67 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
What is the sea temperature in October in Istanbul?
In Istanbul in October expect the sea to be warm at 19 °C (65 °F). At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.
How many days of precipitation on average can I expect in Istanbul in October?
In October in Istanbul, we can expect 8 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.0 days of the week, or in general - 28 % days.
How long is the day (from dawn till dusk) in Istanbul in October?
The length of daylight in October in Istanbul is 11 hours.
How heavy is the precipitation in Istanbul in October?
In Istanbul in October, there is 78 mm (3.06 in) rainfall, which means on average 3 mm (0.10 in) rainfall per day.
Is October part of the dry season in Istanbul?
No, October is not a dry month in Istanbul, expect rain approximately 8 days in a month.
Is October part of the wet season in Istanbul?
No, there is no wet season in October in Istanbul - you can expect 8 days of rain during the month.
How many hours of sun to expect in Istanbul in October?
In October in Istanbul, you can expect around 6 hours of sunshine.
How windy is Istanbul in October?
In October in Istanbul, there will be an average wind scale of 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.
How humid is Istanbul in October?
Humidity in Istanbul in October is 78 %.
Is Istanbul rainier in October than in November?
No, October in Istanbul is not a rainier month than November.
Is the temperature rising or falling in the course of time in Istanbul in October?
During October in Istanbul, the day temperatures are decreasing - from 22 °C (71 °F) at the beginning of the month to 17 °C (62 °F) at the end of the month.
Is the sea in Istanbul warmer in October than in September?
No, the sea is not warmer in October in Istanbul than in September.