Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Llanarth, United Kingdom, where the climate can bring varying levels of sun exposure throughout the day. Awareness of UV levels not only helps in preventing sunburn but also plays a pivotal role in maintaining long-term skin health. With summer days often seeing peak UV Index values reaching 7 around midday, it's essential to be proactive about sun safety, especially in this temperate climate characterized by mild summers and overcast days. By learning more about how UV Index fluctuations impact your outdoor activities, you can enjoy the sun while protecting your skin.
As the sun rises, the UV Index (UVI) begins its ascent, starting with a mild level of 1 at 7:00 AM. By 9:00 AM, it reaches a level 3, indicating an increase in solar intensity. The real peak occurs at noon when the UVI hits a robust 7, representing the highest risk for harm from unprotected sun exposure. This high intensity persists until 3:00 PM, when it gradually recedes to a level of 6. As the afternoon wanes, the UVI dips further, dropping to 5 at 4 PM and finally back to a gentle 1 by 7 PM, allowing for a safe and comfortable evening. Remember, the hours between 10 AM and 3 PM mark the most crucial times for sun safety!
| 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 | 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 increases during the spring and summer months. From January to February, the UV Index remains low (1-2), allowing for safer outdoor activities with a burn time of 45 minutes. As we progress into March and April, the levels rise to a moderate range (4-5), reducing burn time to 30 minutes. The high-risk months of May through August see a dramatic increase, with UV Index values reaching 7-8 (high to very high), which significantly shortens burn time to 15-25 minutes. Finally, from September to October, the risk decreases as the UV Index drops to moderate levels (4-6), returning to safer exposure times. Visitors and residents are advised to take precautions during high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours, to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Liverpool UVI | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Sheffield UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Birmingham UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Llanarth | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| London UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Bristol UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |