Last updated: July 2, 2025
In Siglufjörður, Iceland, awareness of the UV Index is crucial for maintaining skin health, especially during the bright summer months when UV levels can climb. Understanding UV exposure is key to preventing sunburn and reducing the long-term risks of skin damage. Given its subarctic climate and varying weather conditions, Siglufjörður experiences distinct UV risks that can surprise residents and visitors alike. With morning readings starting at a low 1 and peaking at a moderate 5 mid-afternoon, it's essential to stay informed about UV levels to enjoy the stunning landscapes safely while protecting your skin. Remember, even on overcast days, UV rays can still pose a threat!
The UV Index today exhibits a clear and dynamic pattern, peaking during the midday hours. Starting at a gentle 1 by 7:00 AM, it gradually escalates to 5 from noon until 3:00 PM, indicating a high level of UV radiation. This intense peak, particularly between 12:00 PM and 3:00 PM, urges outdoor enthusiasts to take necessary precautions, such as wearing sunscreen and protective clothing. As the sun begins its descent, the index recedes to 4 at 4:00 PM, before tapering off to 1 by 7:00 PM, reflecting the day's diminishing sunlight. Stay vigilant and enjoy the outdoors safely!
| 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 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 4 | 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 |