UV Index
UV Index
Today's UV index in Postojna, Slovenia 
will be up to 7.8, 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: 2025-06-01
With Postojna's UV index reaching 7.8, 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 Postojna varies throughout the year, with higher values in summer reaching around 7 to 8, indicating strong sun exposure, and lower values in winter around 1 to 2, indicating weak sun exposure.
Postojna experiences warm summers and cold winters, with temperatures often rising above 25°C in July and dropping below freezing in January. Rainfall is spread evenly across the year, with a little more rain in spring and autumn.
Compared to other parts of Slovenia, Postojna tends to be a bit cooler and wetter due to its location near the Alps. Neighboring countries like Italy and Austria have similar weather patterns, but Italy’s coastal areas are generally warmer and Austria’s higher mountains are colder.
See the UV index hour by hour for Postojna, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.