UV Index in Istanbul, Turkey

Last updated: June 2, 2025

In Istanbul, Turkey, awareness of the UV Index is essential for protecting your skin from harmful ultraviolet rays. Understanding UV levels is crucial not only for preventing painful sunburns but also for maintaining long-term skin health. With Istanbul's Mediterranean climate characterized by long, sunny summers, the risk of high UV exposure can be substantial, especially during peak hours like noon. As the UV Index often reaches levels above 8, even short periods in the sun without protection can lead to skin damage. Stay informed and safeguard your skin by monitoring the UV Index regularly—your future self will thank you!

Hourly UV Index in Istanbul

As the day unfolds, the UV Index experiences a dramatic rise, peaking at an intense 10 around 1 PM, signaling the highest level of harmful UV radiation. Early morning hours start gently, with a maximum of 1 at 7 AM, gradually increasing to a moderate 4 by 9 AM. The ascent continues steadily, reaching a notable 8 between 11 AM and 12 PM before soaring to its zenith. After this peak, the index begins to wane, declining to 5 by 4 PM and dropping further to a safe 1 by 7 PM. It’s vital to stay protected during the peak hours of 11 AM to 3 PM to enjoy the sunshine without compromising skin health.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:004moderate30 min
10:006high25 min
11:008very high15 min
12:009very high15 min
13:0010very high15 min
14:009very high15 min
15:008very high15 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Istanbul

The UV Index shows significant seasonal variation, with higher values typically occurring from March to September. The months of May through August are particularly high-risk, featuring very high UV levels (UV Index 8 to 10) and reduced burn times of just 15 minutes. Visitors and residents are advised to take precautions during these months by seeking shade, wearing protective clothing, and applying sunscreen regularly. Conversely, the UV risk is lower in January, November, and December, where the index drops to moderate or low levels, allowing for more extended sun exposure times without immediate risk of burning. Staying informed about these changes can help everyone enjoy the outdoors safely throughout the year.

Monthly Maximum UV Index for Istanbul, Turkey

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Istanbul. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3467910997632
Data source: Statistical UV Index data for Istanbul, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Istanbul UV Index with Other Turkey Cities

The table above highlights how UV exposure in Istanbul compares to other major locations across Turkey. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Istanbul's solar exposure compared to other cities in Turkey. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Istanbul3467810997632
Bursa UVI34789101098642
Izmir UVI347891010108643
Ankara UVI3488101111108642
Adana UVI3579101111108743