Istanbul weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Excellent
Best time to visit: May – September
What is the weather like in Istanbul in July?
In July, Istanbul is hot: daytime highs average 28 °C, and even at night it stays warm at around 21 °C. The sea averages 23.7 °C – pleasant for swimming. With around 11 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 22 mm in total. On about 5 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Istanbul.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 14 h 52 min05:44 – 20:36
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 17 daysdew point 18 °C or more
- Wind
- 21 km/haverage daily peak
- Cloud cover
- 18 %on average
- Hot days
- 5 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+3Europe/Istanbul
How the score comes together
- Temperatureweight 50 %88 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Istanbul in July: quick answers
Is Istanbul hot in July?
Yes. In July, Istanbul is hot: daytime highs average 28 °C and nights stay around 21 °C. On about 5 days the thermometer climbs to 30 °C or more.
Can you swim in Istanbul in July?
Yes. In July the sea averages 23.7 °C – pleasant for swimming.
Does it rain much in Istanbul in July?
Rain is rare: about 3 days bring 22 mm in total.
Istanbul month by month
The whole year in IstanbulAll destinations: TurkeyWhere to go in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)