UV Index
UV Index
Today's UV index in Ljubljana, Slovenia 
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: 2025-05-12
With Ljubljana'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 Ljubljana varies throughout the year, reaching its highest levels around 7 to 8 during summer months and dropping to 0 to 1 in winter. This means the sun’s strength is strongest in summer.
Ljubljana experiences four seasons: cold winters with occasional snow, mild springs with blooming flowers, warm summers often above 25°C (77°F), and cooler autumns with falling leaves. Rainfall is spread fairly evenly but peaks in spring and autumn.
Compared to other parts of Slovenia, Ljubljana has moderate temperatures and rainfall. Cities closer to the coast, like Koper, are milder in winter and warmer in summer, while mountainous areas like Bled are cooler and snowier. Neighboring countries like Italy and Austria also show similar seasonal changes but differ in altitude and climate zones.
See the UV index hour by hour for Ljubljana, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.