UV Index in Callac, France

Last updated: July 2, 2025

Understanding the UV Index in Callac, France is crucial for safeguarding your skin and overall health. The UV Index indicates the strength of ultraviolet radiation from the sun, which can lead to painful sunburns and long-term skin damage if proper precautions aren't taken. With Callac's Cfb climate, residents face varying UV levels throughout the day, particularly peaking during midday hours, when values soar to 9. Being aware of the UV Index empowers you to make informed decisions about sun protection, allowing you to enjoy the beautiful outdoors while keeping your skin healthy and safe.

Hourly UV Index in Callac

The UV Index on this sunny day starts off modestly, peaking at 1 between 07:00 and 09:00, indicating minimal risk for harm from unprotected sun exposure. As the day progresses, we see a noticeable climb: by 10:00, the index reaches 3, and by noon, it escalates to a significant 7. The highest point occurs at 14:00, with a peak of 9, highlighting a high risk of harm from unprotected sun exposure during these hours. As the afternoon transitions to evening, the index gradually declines to 2 by 19:00, suggesting a safer window for outdoor activities. It’s a clear reminder to stay protected, especially during the peak hours of 12:00 to 15:00 when the sun’s intensity is at its strongest!

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
08:001low45 min
09:002low45 min
10:003moderate30 min
11:005moderate30 min
12:007high25 min
13:008very high15 min
14:009very high15 min
15:008very high15 min
16:007high25 min
17:006high25 min
18:004moderate30 min
19:002low45 min

Monthly UV Index Trends in Callac

Throughout the year, UV radiation levels fluctuate significantly, with distinct high-risk months emerging in the summer. From May to August, the UV Index is categorized as very high (ranging from 8 to 9), indicating that visitors and residents should exercise heightened caution, as the burn time decreases to just 15 minutes. April sees a transition to a high exposure category, while March starts in a moderate range. Conversely, the winter months, including January, November, and December, have a low UV Index (2), granting longer burn times of 45 minutes. To safeguard against skin damage, it's imperative for everyone to wear protective clothing, seek shade, and apply sunscreen during peak UV times, especially from late spring to the end of summer.

Monthly Maximum UV Index for Callac, France

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Callac. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235789986522
Data source: Statistical UV Index data for Callac, 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 Callac UV Index with Other France Cities

The table above highlights how UV exposure in Callac compares to other major locations across France. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Callac's solar exposure compared to other cities in France. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Paris UVI235689886421
Callac235689986522
Lyon UVI2356810986532
Nice UVI2467810987532
Marseille UVI2457910987532
Toulouse UVI24679101097532