UV Index in Graz, Austria

Last updated: June 2, 2025

Understanding the UV Index is essential for residents of Graz, Austria, as it serves as a vital guide to protecting your skin from harmful ultraviolet radiation. With peak UV levels reaching as high as 9 during the sunny months, a keen awareness of UV exposure can help prevent painful sunburns and long-term skin damage. Graz’s Cfb climate features a mix of cool summers and mild winters, but during warmer months, the risk of overexposure can be significant. By monitoring the UV Index, you can enjoy the outdoors safely while taking necessary precautions to maintain your skin health.

Hourly UV Index in Graz

The UV Index reveals a dynamic day of sun exposure, starting with a gentle 1 at 07:00 and gradually ramping up as the morning unfolds. By 09:00, it climbs to 4, reaching a more noteworthy 6 at 10:00. As the sun reaches its zenith, the UV Index peaks at 9 during the crucial hours of 12:00 and 13:00, indicating a high risk of harm from unprotected sun exposure. The intensity begins to wane after 14:00, settling to 7 at 15:00 before gradually decreasing to 1 by 19:00. Remember to protect your skin between 11:00 and 14:00 when the sun’s rays are at their most dangerous!

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
10:006high25 min
11:007high25 min
12:009very 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 Graz

Throughout the year, UV index levels exhibit significant seasonal variability, impacting the risk of sunburn for visitors and residents. The high-risk months, characterized by a very high UV Index of 8 or 9, occur from May to August, with burn times as short as 15 minutes. In contrast, the UV Index drops to a low level of 1 in December, allowing up to 45 minutes of safe sun exposure. As the seasons transition, caution should be taken during the moderate months of February, March, October, and November, where burn times decrease to 30 minutes. To minimize sun damage, individuals are encouraged to seek shade, wear protective clothing, and apply sunscreen, especially during the peak summer months when UV exposure is at its highest.

Monthly Maximum UV Index for Graz, Austria

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Graz. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Statistical UV Index data for Graz, 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 Graz UV Index with Other Austria Cities

The table above highlights how UV exposure in Graz 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.
Graz's solar exposure compared to other cities in Austria. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Vienna UVI235688876421
Linz UVI235689986421
Graz235689986431
Salzburg UVI236789986432
Innsbruck UVI24779101097532