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World Travel Guide > Guides > Europe > Turkey > Istanbul

Istanbul Weather

25°C

Local time Istanbul

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Weather in Istanbul

Istanbul has a mixed climate of Mediterranean, oceanic and humid subtropical. Because of the city’s vast size, microclimates can occur, meaning different parts of the city will have different levels of humidity, varying temperature levels and rainfall. Istanbul is a year-round destination.

Spring (March to May) sees temperatures climb steadily with the average high going from 11°C (52°F) in March to 20°C (68°F) in May. While temperature goes up, rainfall decreases as the season progresses. April and May are a good time to visit Istanbul.

Summer (June to August) is dry with long, hot days, meaning this is the best time to visit Istanbul. July and August are the driest months with three to four rainy days a month. Although the average high is around 28°C (82°F), there are days when temperatures exceed 30°C (86°F) so come prepared.

Autumn (September to November) starts off warm, so much so that many people consider September as summer instead of autumn. By November, the average high is dropped to 14°C (57°F) and rain starts to fall abundantly.

Winter (December to February) is rainy, making it colder than it seems. Temperatures can also drop to sub-zero at night and snow is possible.

Turkey is a secular country, but the Muslim holy month of Ramadan is widely observed, and many smaller establishments tend to close during the day, while sales of alcohol restricted.

Guidetype and fpcity weatherwtg_cforecast_table
Weather (day) Temp (max day) Rain (mm) Wind (mph) Humidity Pressure Visibility
Monday
Sunny
Sunny skies
25
°C
0
8
sw
0-20%
1005 mb
good
Tuesday
PartlyCloudyDay
Partly cloudy skies
21
°C
1.4
18
wsw
40-60%
1009 mb
good
Wednesday
PartlyCloudyDay
Partly cloudy skies
16
°C
0.9
2
ene
40-60%
1017 mb
good
Thursday
Sunny
Sunny skies
23
°C
0
2
ssw
0-20%
1012 mb
good
Friday
Cloudy
Cloudy skies
18
°C
0
6
sw
60-80%
1012 mb
good
Saturday
PartlyCloudyDay
Partly cloudy skies
21
°C
0
6
w
40-60%
1016 mb
good
Sunday
Sunny
Sunny skies
25
°C
0
4
w
0-20%
1015 mb
good
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Last updated: 2019-05-06 21:15:37
We update the weather data for from our weather partner every four hours. The time the last update was received is detailed here.
Actual Forecast Location: We have 830+ weather locations on the worldtravelguide.net website. Where no exact location is available we have used the nearest appropriate forecast point.
Symbols indicate the predominant weather for the day in question, calculated based on a weighting of different types of weather. So if a day is forecast to be sunny with the possibility of a brief shower, then we will see a sunny or partly cloudy symbol rather than a rain cloud.
The maximum temperature is the highest temperature forecast between dawn and dusk, and the minimum temperature is the lowest temperature expected from dusk on the day in question to dawn the next day. The temperature is in °C, or Celsius.
Wind speed and direction are the conditions expected at midday. Wind direction is based on a 16 point compass. W, SW, SSW, etc. The wind direction states where the wind originates. Wind speed is listed in MPH or miles per hour.
Humidity levels indicates how much water vapour the air contains compared to the maximum it could contain at that temperature. As a general guide:
  • 0 to 30 is very low
  • 31 to 50 is low
  • 51 to 70 is moderate to low
  • 71 to 80 is moderate
  • 81 to 90 is moderate to high
  • 91 to 100 is high
Pressure is measured in millibars (mb)
Visibility based on whether the human eye can see the following distances:
  • Very poor - less than 1km
  • Poor - between 1km and 4km
  • Moderate - between 4km and 10km
  • Good - between 10km and 20km
  • Very good - between 20km and 40km
  • Excellent - more than 40km
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