UV Index in Bratislava, Slovakia

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents and visitors in Bratislava, Slovakia, where the climate offers a mix of sunny days and overcast skies. As UV levels can rise significantly during mid-day, being aware of these ratings is essential for preventing sunburn and protecting skin health. Bratislava experiences a Cfb climate, bringing varying exposure risks throughout the year; hence, knowing when to seek shade or apply sunscreen can make a substantial difference in enjoying the beautiful outdoors safely. With peak UV levels nearing 8 in the afternoon, it’s vital to stay informed and take precautions to safeguard your skin while soaking in the sun!

Hourly UV Index in Bratislava

As the sun rises, the UV Index begins its steady climb, starting from a gentle 1 at 7:00 AM. By 10:00 AM, it reaches 5, signaling an increase in UV exposure. The peak occurs at 12:00 PM, hitting a robust 8, where caution is advised, especially for outdoor activities. The intensity remains high at 8 from 1:00 PM to 2:00 PM, encouraging sun protection measures. As the afternoon progresses, the index gradually declines to 6 at 3:00 PM, then further to 3 by 5:00 PM. Finally, as the day winds down, the UV Index settles at 1 by 7:00 PM, reflecting a much safer environment for evening activities. Enjoy the sun, but remember to protect your skin 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
17:002low45 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Bratislava

Throughout the year, the UV Index exhibits significant seasonal variations, with the highest levels occurring from May to July, categorized as very high with a burn time of just 15 minutes. April marks the transition into higher UV exposure, registering a UV Index of 6 and a high exposure category. Conversely, the winter months of January, November, and December remain in the low exposure category, with burn times up to 45 minutes. Visitors and residents should be particularly cautious during the high-risk months of May, June, and July, when it is crucial to seek shade, wear protective clothing, and apply sunscreen regularly to minimize the risk of skin damage. As the UV Index decreases in the fall and winter, vigilance can be relaxed, but some level of sun protection remains advisable year-round.

Monthly Maximum UV Index for Bratislava, Slovakia

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Bratislava. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235688876421
Data source: Statistical UV Index data for Bratislava, 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 Bratislava UV Index with Other Slovakia Cities

The table above highlights how UV exposure in Bratislava compares to other major locations across Slovakia. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Bratislava's solar exposure compared to other cities in Slovakia. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Presov UVI235678876421
Kosice UVI235678876421
Bratislava235688876421
Nitra UVI235689886421
Zilina UVI235679986421