UV Index
UV Index
Today's UV index in Istanbul, Turkey 
will be up to 6.8, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With Istanbul's UV index reaching 6.8, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
The UV index in Istanbul varies throughout the year, typically ranging from low in winter to moderate or high in summer months, peaking around June and July. Seasonal patterns in Istanbul show hot, humid summers with temperatures often above 30°C and cold, rainy winters with occasional snow. Spring and fall are mild and pleasant with moderate rainfall. Compared to other parts of Turkey, Istanbul has milder winters and cooler summers because of its location near the sea. It generally experiences more rain than inland regions and has a more moderate climate than neighboring countries like Greece and Bulgaria.
See the UV index hour by hour for Istanbul, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.