UV Index in Rennau, Germany

Last updated: July 2, 2025

Understanding the UV Index is essential for residents of Rennau, Germany, where outdoor activities are often enjoyed under the sun's captivating rays. With a Cfb climate, the region experiences moderate UV exposure, especially during peak hours—ranging from 7 at midday to a safe level of 1 in the early morning and late evening. Being aware of the UV Index helps residents take proactive measures against sunburn and long-term skin health issues. As the sun climbs higher, so does the risk; understanding these levels is key to enjoying sunny days while protecting your skin.

Hourly UV Index in Rennau

As the sun rises, the UV Index (UVI) begins its ascent, starting with a mild level of 1 at 7:00 AM. By 9:00 AM, it reaches a level 3, indicating an increase in solar intensity. The real peak occurs at noon when the UVI hits a robust 7, representing the highest risk for harm from unprotected sun exposure. This high intensity persists until 3:00 PM, when it gradually recedes to a level of 6. As the afternoon wanes, the UVI dips further, dropping to 5 at 4 PM and finally back to a gentle 1 by 7 PM, allowing for a safe and comfortable evening. Remember, the hours between 10 AM and 3 PM mark the most crucial times for sun safety!

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

Monthly UV Index Trends in Rennau

Throughout the year, the UV Index exhibits notable seasonal variations, with the highest levels occurring during the summer months. From May to August, individuals should be particularly cautious, as the index reaches its peak at 8 in June and maintains a high level of 7 in July and August. These months are classified as high-risk, with a significantly reduced burn time of just 15 to 25 minutes depending on the month. As the year progresses toward winter, the UV Index falls to lower levels in November and December, offering a reprieve with burn times extending back to 45 minutes. Visitors and residents are advised to monitor UV levels closely, wear protective clothing, and apply sunscreen, especially during the high-risk months to minimize the risk of skin damage.

Monthly Maximum UV Index for Rennau, Germany

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Rennau. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124578775321
Data source: Statistical UV Index data for Rennau, 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 Rennau UV Index with Other Germany Cities

The table above highlights how UV exposure in Rennau compares to other major locations across Germany. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Rennau's solar exposure compared to other cities in Germany. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Hamburg UVI123578775321
Berlin UVI124578775321
Rennau124578775321
Koeln UVI124578875421
Frankfurt am Main UVI234588875421
Munich UVI235689986421