Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents of Caerwys, United Kingdom, as it can significantly impact skin health and sunburn prevention. With varying levels of UV radiation throughout the day, knowing when to protect your skin is essential, especially during peak hours where the UV Index reaches up to 8. Caerwys, characterized by its temperate maritime climate, experiences notable UV exposure risks, particularly in the summer months. By staying informed about local UV levels, you can enjoy the beautiful outdoors while safeguarding your skin against harmful effects.
As the sun rises, the UV Index begins its gradual ascent, starting at a modest 1 at 07:00. The intensity picks up swiftly, reaching 3 by 09:00 and climbing to a noteworthy 5 by 10:00. By 11:00, it peaks at 6, but the real heat hits around 12:00 with a maximum of 7. The index reaches its zenith at 13:00 and 14:00, both clocking in at a strong 8, signaling the need for sun protection. A gentle decline follows, tapering off to 7 at 15:00, then easing further to 5 by 16:00. As the day winds down, the UV Index drops to 4 at 17:00, before settling back to 2 at 18:00 and finally concluding the day at a low 1 by 19:00. Make sure to take precautions during those peak hours to stay safe in the sun!
| 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 | 5 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | 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, UV exposure significantly varies, with the highest risk months falling between May and August. In May, the UV Index reaches 7 (high), indicating a burn time of just 25 minutes, while June and July peak at 8 (very high), reducing burn time further to just 15 minutes. As summer fades, UV levels decrease, dropping to 5 in September and 4 in October, before returning to low levels of 1 or 2 during the winter months of November to February. Visitors and residents should be particularly vigilant during the high-risk months, ensuring proper sun protection, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday when the sun's intensity is greatest.
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 |
| Caerwys | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Birmingham UVI | 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 |