UV Index in Prague, Czech Republic

Last updated: May 3, 2025

Understanding the UV Index in Prague is essential for protecting your skin and overall health as you enjoy the city's beautiful sights. With UV levels peaking at 7 during the midday hours, awareness of these levels can help you prevent sunburn and long-term skin damage. Prague's temperate climate means that while summers can bring stronger UV radiation, even cloudy days pose a risk. By staying informed about the UV Index, you can take proactive steps to stay safe under the sun and make the most of your outdoor adventures in this stunning city.

Hourly UV Index in Prague

As the sun rises, the UV Index begins its slow ascent, starting at a mere 1 at 7:00 AM. By 8:00 AM, it climbs to 2, and as the clock strikes 9:00 AM, it reaches 3. The true intensity of the sun emerges around 10:00 AM, with the index leaping to 5. Just prior to noon, at 11:00 AM, it peaks at 6, but the real highlight comes at 12:00 PM, when it hits an impressive 7. This high continues until 2:00 PM, showcasing a strong midday sun before gradually easing off. By 3:00 PM, the index dips to 6, and by 4:00 PM, it further descends to 4. As the day winds down, the UV levels drop significantly; by 6:00 PM, it returns to 2, and finally settles back to 1 by 7:00 PM. Remember to protect yourself during those peak hours! ☀️

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
09:003moderate30 min
10:005moderate30 min
11:006high25 min
12:007high25 min
13:007high25 min
14:007high25 min
15:006high25 min
16:004moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Prague

Throughout the year, the UV Index exhibits significant seasonal changes, reflecting varying risks associated with sun exposure. The months of May through August are particularly high-risk, with UV Index values reaching 7 (high) and 8 (very high), resulting in shorter burn times of 15 to 25 minutes. Visitors and residents should take extra precautions during this period, such as wearing sunscreen, protective clothing, and sunglasses, especially between 10 AM and 4 PM. As the year transitions to September and October, UV levels decrease moderately but still warrant caution until they drop to low levels in November and December, where burn times increase back to 45 minutes. Staying informed and adopting preventative measures is essential to avoid skin damage and enjoy the outdoors safely year-round.

Monthly Maximum UV Index for Prague, Czech Republic

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Prague. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec234678876421
Data source: Statistical UV Index data for Prague, 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 Prague UV Index with Other Czech Republic Cities

The table above highlights how UV exposure in Prague compares to other major locations across Czech Republic. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Prague's solar exposure compared to other cities in Czech Republic. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Prague234578876421
Ostrava UVI224678876421
Olomouc UVI234678876422
Pilsen UVI235688876421
Brno UVI235688876422