Last updated: August 1, 2025
Awareness of the UV Index in Biržai, Lithuania, is crucial for protecting your skin and maintaining overall health. With summer months often bringing stronger sunlight, understanding UV levels helps in preventing sunburn and reducing long-term skin damage. Biržai's Dfb climate not only features warm summers but also presents varying UV exposure risks throughout the day, peaking at a notable 7 between 1 PM and 2 PM. Stay informed and take protective measures to enjoy the beautiful days safely!
The UV Index for the day reveals a progressively intense sun! Early risers will notice a mild Index of 1 at 7:00 AM, gradually climbing to a moderate 4 by 10:00 AM. The peak occurs between 1:00 PM and 2:00 PM, where it reaches a height of 7, signaling the need for sun protection. By the time we reach the late afternoon, the index begins to fade, dropping to a 5 at 4:00 PM and continuing to decline, finally returning to a gentle level of 1 by 7:00 PM. As the day progresses, it's essential to stay mindful of the UV intensity—plan your outdoor activities accordingly!
| 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 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 6 | high | 25 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, there are significant variations in the UV Index that indicate changing risks associated with sun exposure. January and February exhibit low levels, with a UV Index of 1 and 2, allowing for a safer burn time of 45 minutes. As we move into March and April, the UV Index rises to 3 and 5 respectively, transitioning to a moderate risk where the burn time decreases to 30 minutes. The peak risk months occur from May to August, where the UV Index reaches high levels of 6 and 7, corresponding to a burn time of just 25 minutes. September and October see a return to moderate levels, with the UV Index falling to 4 and 3, extending burn times back to 30 minutes. November and December once again present low UV conditions, with burn times increasing to 45 minutes. Visitors and residents should exercise increased caution and utilize sun protection during the high-risk months of May through August, ensuring adequate sunscreen application, protective clothing, and seeking shade when necessary.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Birzai | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 4 | 3 | 2 | 1 |
| 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 UVI | 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 |