Last updated: May 3, 2025
In picturesque Siglufjörður, Iceland, staying informed about the UV Index is essential for safeguarding your skin against harmful ultraviolet rays. Understanding the daily UV levels can help prevent sunburn and promote long-term skin health, particularly important in this unique ET climate zone, where sunlight intensity can rise unexpectedly despite cooler temperatures. With UV Index values peaking at 5 around midday, locals and visitors alike should remain vigilant, especially during outdoor activities, to enjoy the stunning beauty of Siglufjörður while protecting their skin from potential damage.
As the sun rises, the UV Index gradually climbs, starting from a modest 1 at 07:00. By 08:00, it doubles to 2, and then begins a steady ascent, peaking at 5 around 13:00—the highest point of the day. From there, it gently tapers off, returning to 4 by 14:00 and descending further to 2 by 18:00. As the day winds down, the UV Index falls to 1 by 19:00, marking the end of a day where sun safety is paramount, especially during the peak hours when the index reaches 4 and 5. Be sure to protect your skin during those crucial hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 4 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index levels demonstrate significant seasonal variation, indicating a need for careful sun protection. From January to March, the UV Index remains low (1-2), allowing for up to 45 minutes of safe sun exposure without risk. As spring arrives in April and May, the UV Index rises to moderate levels (3-5), with recommended burn times decreasing to 30 minutes. The summer months of June and July present the highest risk with a peak UV Index of 6; during this period, safe exposure time drops to 25 minutes. While August and September see a gradual decrease, the UV Index remains moderate (4-3), requiring continued vigilance. The fall and winter months of October through December return to low levels (1-2), with burn times extending back to 45 minutes. Visitors and residents should take precautions, especially during the high-risk months of June and July, by wearing sunscreen, protective clothing, and seeking shade during peak hours to safeguard against UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Siglufjoerdur | 1 | 1 | 2 | 3 | 5 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |
| Reykjavik UVI | 1 | 1 | 2 | 3 | 5 | 6 | 6 | 4 | 3 | 2 | 1 | 1 |
| Gardabaer UVI | 1 | 1 | 2 | 3 | 5 | 6 | 6 | 4 | 3 | 2 | 1 | 1 |
| Hafnarfjoerdur UVI | 1 | 1 | 2 | 3 | 5 | 6 | 6 | 4 | 3 | 2 | 1 | 1 |
| Kopavogur UVI | 1 | 1 | 2 | 3 | 5 | 6 | 6 | 4 | 3 | 2 | 1 | 1 |
| Akureyri UVI | 1 | 1 | 2 | 4 | 6 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |