Last updated: June 2, 2025
In Nuuk, Greenland, awareness of the UV Index is crucial, particularly as the sun's rays can be deceptively strong in this Arctic climate. Understanding UV levels is essential for preventing sunburn and preserving long-term skin health, especially in a location where reflective surfaces, such as snow and ice, can increase exposure risks. During the typical summer months, UV Index readings in Nuuk can peak as high as 7, indicating a high risk of harm from unprotected sun exposure between midday hours. Staying informed about these levels can help residents and visitors alike enjoy the stunning landscapes while safeguarding their skin.
The UV Index throughout the day showcases a dynamic rise and fall, peaking at 7 between 12:00 and 14:00. Starting off gently at 1 at 07:00, it gradually escalates, reaching 4 by 10:00 and spiking to a robust 6 at 11:00. As the sun reaches its zenith, the index hits its highest point of 7, signaling a strong need for sun protection. Post-14:00, the intensity begins to dip, descending gracefully to 5 by 16:00, and tapering off further to 2 by 19:00. This fascinating UV journey underscores the importance of vigilance and protection when exposed to sunlight, particularly during the midday 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 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
As the seasons change, so does the UV Index, indicating varying levels of sun exposure risk throughout the year. From January to February, the UV Index remains low (1), allowing for safe outdoor activities with a burn time of 45 minutes. March and April see a rise to moderate levels (3 and 5, respectively) with shorter burn times of 30 minutes, signaling increased caution for sun exposure. May and June represent high-risk months with indices of 6 and 7, where it's crucial to limit exposure to 25 minutes. In July and August, the UV Index drops slightly to moderate levels (5), but still requires protective measures. September falls back to moderate (3), followed by a return to low levels in October, November, and December (2 and 1) with more extended burn times of 45 minutes. Visitors and residents should be particularly vigilant from May to June, ensuring they use sunscreen and wear protective clothing to minimize risks during peak UV exposure months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ilulissat UVI | 1 | 1 | 2 | 3 | 4 | 5 | 4 | 4 | 3 | 1 | 1 | 0 |
| Aasiaat UVI | 1 | 1 | 2 | 3 | 4 | 5 | 4 | 4 | 3 | 1 | 1 | 0 |
| Sisimiut UVI | 1 | 1 | 2 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |
| Nuuk | 1 | 1 | 3 | 5 | 6 | 7 | 5 | 5 | 3 | 2 | 1 | 1 |
| Qaqortoq UVI | 1 | 2 | 3 | 5 | 6 | 7 | 6 | 5 | 4 | 2 | 1 | 1 |