Last updated: June 2, 2025
Understanding the UV Index is essential for everyone in Arinsal, Andorra, where the combination of breathtaking mountains and vibrant sunshine presents unique outdoor opportunities—and risks. Being aware of UV levels is crucial for sunburn prevention and maintaining long-term skin health, especially at high altitudes where UV radiation is more intense. In this Cfb climate zone, residents and visitors alike should remain vigilant, particularly during midday hours when the UV Index peaks at a striking 11. By staying informed, you can enjoy the stunning landscapes of Arinsal while protecting your skin from harmful effects.
The UV Index for the day began at a gentle 1 at 7:00 AM, suggesting minimal risk for sun exposure. As the sun climbed higher, the index steadily rose, reaching 3 by 9:00 AM. By 11:00 AM, it spiked to a more significant 7, indicating a moderate risk for harm from unprotected sun exposure. The peak of the day arrived at 12:00 PM, with a striking 9, highlighting a high risk, especially between 1:00 PM and 2:00 PM, when it reached an intense 11. As the afternoon progressed, the numbers gradually diminished: 10 at 3:00 PM, 8 at 4:00 PM, and further down to 4 by 6:00 PM. The evening wrapped up with a comfortable 2 at 7:00 PM, marking a gentle close to the sun-drenched day. Ensure proper sun protection during peak hours for a safe and enjoyable experience!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV levels experience significant fluctuations, with the high-risk months ranging from March to September. During these months, especially in April and May, the UV Index rises to 8 and 10, indicating very high levels that can lead to skin damage. June and July peak at an extreme UV Index of 11, necessitating extra caution. Visitors and residents are advised to take protective measures, such as using broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sun hours, particularly when the burn time drops to as little as 10 minutes. In contrast, the winter months of December and January present lower UV levels, with indices of 2 and 3, allowing for more extended safe sun exposure of up to 45 minutes. Be vigilant about UV exposure, especially as the seasons change.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arinsal | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| la Massana UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| Sant Julia de Loria UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| Encamp UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| les Escaldes UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| Andorra la Vella UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |