Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Kaunas, Lithuania, where the climate can expose you to varying levels of ultraviolet radiation throughout the year. Awareness of UV levels aids in preventing sunburn and protecting skin health, especially during the sunniest hours of the day, typically between 10 AM and 3 PM when the index reaches its peak at 7. With Kaunas experiencing a humid continental climate, it’s vital to remain vigilant against potential UV risks, ensuring that fun in the sun is safe and enjoyable for everyone!
As the sun rises, the UV Index begins its climb, starting at a mild 1 at 7:00 AM. By 9:00 AM, it reaches a moderate 3, encouraging early risers to consider sun protection. The intensity peaks at 12:00 PM with a vigorous 6, signaling the need for caution. The afternoon sees the UV Index remain high, hitting 7 at 1:00 PM and 2:00 PM, before gradually tapering to 4 by 5:00 PM. As evening approaches, the UV levels decrease, dropping back to a safe 1 by 7:00 PM. Staying informed about these fluctuations can help you enjoy the sun while staying safe!
| 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 | 5 | moderate | 30 min |
| 12:00 | 6 | 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes reveal significant fluctuations in the UV Index, influencing how individuals should protect their skin from harmful sun exposure. The high-risk months for UV radiation are primarily from May to August, where the UV Index peaks at 6 to 7, indicating a high level of exposure risk with a burn time of just 25 minutes. In contrast, the winter months from November to February exhibit low UV levels (1 to 2), allowing for longer burn times of up to 45 minutes. Residents and visitors are advised to take extra precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade when outdoors, to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Siauliai UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Panevezys UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Klaipeda UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Kaunas | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Vilnius UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |