Last updated: June 2, 2025
In Rajec, Slovakia, awareness of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike make informed decisions about outdoor activities, especially during peak sun hours. With a Dfb climate, Rajec experiences significant UV exposure, particularly between 10 AM and 2 PM, where the index can reach dangerously high levels of 9. Being aware of these fluctuations not only protects your skin but also enhances your overall well-being under the Slovak sun.
As the sun rises, the UV Index begins its ascent, peaking at 9 from noon to 1 PM—the most intense hours for sun exposure. Starting from a low of 1 at 7 AM, it gradually climbs to 3 by 8 AM, reaching 6 by 10 AM. The UV rays intensify further, hitting 8 at 11 AM before maxing out at 9 from 12 PM to 1 PM. As the afternoon progresses, the index decreases, dropping to 6 at 3 PM, then gently rolling off to 5 at 4 PM and tapering down to 1 by 7 PM. This day reflects a typical pattern, highlighting the importance of sun protection during those peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | 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 variations, impacting sun exposure safety. The high-risk months for UV exposure are from April to August, with the highest readings occurring in June and July, where the UV Index reaches 9, classified as very high, and resulting in a burn time of just 15 minutes. As spring transitions to summer, caution is advised; during these months, it’s essential for both visitors and residents to take protective measures such as wearing sunscreen, protective clothing, and seeking shade when outdoors. Conversely, the months of January, November, and December feature low UV levels, making sun protection less critical. However, as the UV Index increases from February through March, awareness of sun safety should gradually rise, particularly as activities in outdoor settings become more frequent.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Presov UVI | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Kosice UVI | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Bratislava UVI | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Nitra UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Rajec | 2 | 3 | 5 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Zilina UVI | 2 | 3 | 5 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |