UV Index in Karlstein, Austria

Last updated: June 2, 2025

Awareness of the UV Index is crucial for residents and visitors in Karlstein, Austria. Understanding UV levels not only helps in preventing sunburn but also plays a vital role in maintaining long-term skin health. Situated in a temperate Cfb climate, Karlstein experiences varying UV exposure throughout the day, with UV Index levels peaking between 11 AM and 2 PM, reaching as high as 9. Engaging with this data empowers you to enjoy the beautiful outdoors while protecting your skin from harmful rays.

Hourly UV Index in Karlstein

The UV Index shows a distinct daily rhythm, peaking at 1 PM with a significant value of 9—a strong indicator for sun exposure. As the day unfolds, early morning starts at a comfortable 1 at 7 AM, gradually climbing to 2 by 8 AM. By 10 AM, it reaches 5, and just before noon, it surges to 8. The afternoon sees a slight dip from 9 at 1 PM to 7 by 3 PM, before slowly descending back to 1 by 7 PM. This data highlights the importance of sun protection during those peak hours, especially from 11 AM to 2 PM. Remember to stay safe and enjoy the sunshine!

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
09:004moderate30 min
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:009very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Karlstein

Throughout the year, UV levels vary significantly, with the highest risk months occurring from May to August, where the UV Index reaches a peak of 9 in June and remains at 8 during July and August, indicating a very high exposure category and a critical burn time of just 15 minutes. In contrast, winter months see much lower UV levels, with January and November registering a UV Index of 2 and December dropping to 1, categorized as low exposure. Visitors and residents should exercise caution during the high-risk months by minimizing sun exposure, wearing protective clothing, and applying sunscreen regularly, particularly between late spring and early fall when UV radiation is at its strongest.

Monthly Maximum UV Index for Karlstein, Austria

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Karlstein. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689886421
Data source: Statistical UV Index data for Karlstein, 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 Karlstein UV Index with Other Austria Cities

The table above highlights how UV exposure in Karlstein compares to other major locations across Austria. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Karlstein's solar exposure compared to other cities in Austria. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Vienna UVI235688876421
Karlstein235689886421
Linz UVI235689986421
Graz UVI235689986431
Salzburg UVI236789986432
Innsbruck UVI24779101097532