Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Ry, Denmark, where even the milder climate can pose sun exposure risks. With UV levels reaching their peak at 7 around midday, awareness of these fluctuations is essential to prevent sunburn and protect long-term skin health. The temperate climate typical of Ry means that while we may enjoy sunny days, we must remain vigilant about the potential for harmful UV radiation. By monitoring the UV Index and taking preventive measures, residents can enjoy the outdoors safely while minimizing skin damage and health risks.
The UV Index starts off mildly low at 1 at 7:00 AM, gradually climbing throughout the morning. By 10:00 AM, it reaches a moderate 4, with significant exposure risk beginning around 11:00 AM as it spikes to 6. The highest levels occur from 12:00 PM to 2:00 PM, maintaining a strong 7 during peak hours—perfect for sun enthusiasts but a cause for caution. As the afternoon progresses, the index gradually declines, dropping to 4 by 5:00 PM and further down to 1 by 7:00 PM. This reveals a clear pattern: the midday sun offers the greatest intensity, so sun safety measures are crucial during those hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure fluctuates, with high-risk months occurring from May to August, when the UV Index reaches 6 or 7, indicating heightened risk for skin damage. In these months, burn time for unprotected skin reduces to just 25 minutes. Moderate levels in March, April, September, and October suggest a more cautious approach is still warranted, allowing for 30 minutes of exposure before risking a burn. Conversely, the winter months of January, February, November, and December feature a low UV Index of 1 or 2, with burn times of 45 minutes, making them safer for prolonged outdoor activities. It’s essential for visitors and residents alike to scale their sun exposure accordingly, ensuring proper skin protection during the high-risk months and enjoying the lower risks opportunistically in the winter.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aalborg UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 2 | 1 | 1 |
| Arhus UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Ry | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Frederiksberg UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Copenhagen UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Odense UVI | 1 | 2 | 3 | 5 | 6 | 8 | 7 | 6 | 5 | 3 | 2 | 1 |