UV Index
UV Index
Today's UV index in Brno, Czechia 
will be up to 5.6, indicating a moderate 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 a UV index reaching up to 5.6 in Brno, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Brno's UV index varies by season, usually low in winter and moderate to high in summer, reaching peak values around midday during the warmest months. UV levels rarely exceed 8 on the scale. Seasonal patterns in Brno show cold winters with snow, mild springs, warm summers often with thunderstorms, and cool, rainy autumns. Temperatures can range from below freezing in winter to around 25°C (77°F) in summer. Compared to wider Czechia and neighboring countries like Austria and Slovakia, Brno experiences similar weather patterns but is slightly warmer in winter and a bit drier than areas in mountainous regions. Its continental climate is typical for Central Europe.
See the UV index hour by hour for Brno, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.