Last updated: May 3, 2025
Understanding the UV Index in Ruhnu, Estonia is crucial for safeguarding your skin against the sun's harmful rays. With typical summer temperatures and a climate categorized as Dfb, residents and visitors alike should be aware of daily UV levels to prevent sunburn and promote long-term skin health. During peak hours, the UV Index can reach up to 6, indicating a high risk of harm from unprotected sun exposure. By staying informed, you can enjoy Ruhnu’s beautiful outdoors while effectively protecting your skin from exposure risks.
Get ready for a day of sunshine with varying UV Index levels! Starting off with a low of 1 at 07:00 and remaining steady until 09:00, the day begins gently. As the sun climbs higher, temperatures peak at 12:00 with a UV Index of 5. The highest exposure occurs at 13:00, reaching 6, prompting sun safety precautions to protect your skin. The intensity then gradually decreases, settling back to a 4 at 16:00 and tapering off to 2 by 18:00. By 19:00, the index returns to a safe 1, allowing for a relaxed evening. Remember to apply sunscreen and wear protective clothing during peak hours to enjoy the beautiful day ahead!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 6 | high | 25 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 exposure varies significantly, with notable seasonal changes impacting both residents and visitors. From January to February, the UV Index remains low (1-2), allowing for a burn time of 45 minutes, making skin protection less critical. March and April see a moderate rise (UV Index 3-4) with a reduced burn time of 30 minutes, suggesting that some protective measures are advisable during outdoor activities. The risk peaks in the high-risk months of May through August, where the UV Index reaches between 6 and 7, and burn time drops to just 25 minutes—strongly advising the use of sunscreen, protective clothing, and hats. As the year transitions into September with a moderate UV Index (4), and then back to low levels from October to December (1-2), residents should be reminded that vigilance is key during these warmer months to avoid skin damage while enjoying the outdoors.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tallinn UVI | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Kohtla-Jaerve UVI | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |
| Narva UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |
| Paernu UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |
| Tartu UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |
| Ruhnu | 1 | 2 | 3 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |