June weather forecast
Istanbul, Turkey

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Ships along the coast of the city port of Istanbul, Turkey
Ships along the coast of the city port of Istanbul, Turkey

Weather in June

June brings the onset of summer to Istanbul, driving outdoor activities as temperature soars to 25.4°C (77.7°F) on average. With the longest daylight hours of the year and a drop in rainfall to 32mm (1.26"), June remains a popular month for summer visits. The appreciable decrease in relative humidity levels often drives locals and tourists to the seaside to relish the cooling breezes. The city comes alive with the sunny weather, adding vibrancy to the city's stunning architectural marvels. A noticeable increase in the sea temperature also entices lovers of water activities, marking the start of the swimming season at the numerous beaches around Istanbul.

Temperature

The coming of June brings a minor shift in Istanbul's weather, with average high-temperatures adjusting from May's pleasant 20.9°C (69.6°F) to a moderately hot 25.4°C (77.7°F). Istanbul's average low-temperature is measured at an agreeable 20°C (68°F) during June.

Humidity

June and July, with an average relative humidity of 67%, are the least humid months.

Rainfall

In June, in Istanbul, the rain falls for 9.5 days. Throughout June, 32mm (1.26") of precipitation is accumulated. In Istanbul, during the entire year, the rain falls for 130.7 days and collects up to 400mm (15.75") of precipitation.

Snowfall

April through November are months without snowfall in Istanbul.

Sea temperature

In Istanbul, the average seawater temperature in June is 21.3°C (70.3°F).
Note: In 21.3°C (70.3°F), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 21°C (69.8°F).

Daylight

June has the longest days of the year in Istanbul, with an average of 15h and 6min of daylight.
On the first day of June in Istanbul, sunrise is at 05:33 and sunset at 20:30. On the last day of the month, sunrise is at 05:35 and sunset at 20:40 +03.

Sunshine

In June, the average sunshine is 11.4h.

UV index

In June, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during June leads to these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! The Sun's UV rays are heightened by the reflection of sand and water.

Frequently asked questions

What is the temperature in June in Istanbul?

In Istanbul, in June, the average high-temperature is 25.4°C (77.7°F), and the average low-temperature is 20°C (68°F).

What are the least humid months in Istanbul?

June and July, with an average relative humidity of 67%, are the least humid months.

What is the average humidity in June in Istanbul?

The average relative humidity in June in Istanbul is 67%.

How much does it rain in Istanbul in June?

In Istanbul, during June, the rain falls for 9.5 days and regularly aggregates up to 32mm (1.26") of precipitation.

When it does not snow in Istanbul?

In Istanbul, snow does not fall in April through November.

How cold is the water in June in Istanbul?

In June, the average sea temperature in Istanbul, Turkey, is 21.3°C (70.3°F). Swimming in 21.3°C (70.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

When are the longest days in Istanbul?

June has the longest days of the year in Istanbul, Turkey, with an average of 15h and 6min of daylight.

How many hours of daylight does Istanbul have in June?

The average day length in June is 15h and 5min.

When is the sunrise / sunset in June in Istanbul?

In June, on the first day of the month, sunrise is at 05:33 and sunset at 20:30. On the last day of the month, in Istanbul, sunrise is at 05:35 and sunset at 20:40 +03.

How long on average sun shines in June in Istanbul?

The average sunshine duration in June is 11.4h.

What is the UV index intensity in June in Istanbul?

The average daily maximum UV index in June in Istanbul is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in June
Istanbul, Turkey

Average temperature in June - Istanbul, Turkey
  • Average high temperature in June: 25.4°C

The warmest month (with the highest average high temperature) is July (27.9°C).
The month with the lowest average high temperature is January (8.5°C).

  • Average low temperature in June: 20°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

Average pressure in June
Istanbul, Turkey

Average pressure in June - Istanbul, Turkey
  • Average pressure in June: 1012.4mbar

The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is July (1011.7mbar).

Average wind speed in June
Istanbul, Turkey

Average wind speed in June - Istanbul, Turkey
  • Average wind speed in June: 14.8km/h

The windiest month (with the highest average wind speed) is August (20.5km/h).
The calmest month (with the lowest average wind speed) is May (14km/h).

Average humidity in June
Istanbul, Turkey

Average humidity in June - Istanbul, Turkey
  • Average humidity in June: 67%

The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are June and July (67%).

Average rainfall in June
Istanbul, Turkey

Average rainfall in June - Istanbul, Turkey
  • Average rainfall in June: 32mm

The wettest month (with the highest rainfall) is December (52mm).
The driest month (with the least rainfall) is August (11mm).

Average rainfall days in June
Istanbul, Turkey

Average rainfall days in June - Istanbul, Turkey
  • Average rainfall days in June: 9.5 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (3.8 days).

Average snowfall in June
Istanbul, Turkey

Average snowfall in June - Istanbul, Turkey
  • Average snowfall in June: 0mm

The month with the highest snowfall is January (24mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in June
Istanbul, Turkey

Average snowfall days in June - Istanbul, Turkey
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average sea temperature in June
Istanbul, Turkey

Average sea temperature in June - Istanbul, Turkey
  • Average sea temperature in June: 21.3°C

The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (7.8°C).

Average daylight in June /
Average sunshine in June
Istanbul, Turkey

Average daylight in June / Average sunshine in June - Istanbul, Turkey
  • Average daylight in June: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in June: 11h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in June
Istanbul, Turkey

Average sunshine days in June - Istanbul, Turkey
  • Average sunshine days in June: 17.9 days

The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is February (12.6 days).

Average UV index in June
Istanbul, Turkey

Average UV index in June - Istanbul, Turkey
  • Average UV index in June: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in June
Istanbul, Turkey

Average cloud cover in June - Istanbul, Turkey
  • Average cloud cover in June: 20

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in June
Istanbul, Turkey

Average visibility in June - Istanbul, Turkey
  • Average visibility in June: 10km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).

Istanbul, Turkey

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