Last updated: July 2, 2025
Understanding the UV Index in Porthleven, United Kingdom is essential for protecting your skin and maintaining overall health. As you enjoy the beautiful coastal scenery, being aware of the daily UV levels helps prevent sunburn and long-term skin damage. With a temperate marine climate, Porthleven experiences varying UV exposure, peaking at an index level of 8 between noon and 2 PM during the warmer months. This highlights the importance of taking proactive measures, such as applying sunscreen and wearing protective clothing, to safeguard against the sun's harmful rays. By staying informed about the UV Index, you can fully embrace the outdoors while keeping your skin safe!
The UV Index fluctuates throughout the day, reaching its peak of 8 between noon and 2 PM. Early risers will notice a gentle start, with levels at just 1 at 7 AM. As the sun climbs higher, the index rises steadily, hitting 5 by 10 AM and 6 by 11 AM. By 12 PM, the intensity peaks, prompting caution for those outdoors. After this midday surge, the index begins a gradual decline, dropping to 7 at 3 PM, and falling further to 4 by 5 PM. As evening approaches, UV levels decrease significantly, resting at 1 by 7 PM. It’s a clear reminder to stay sun-safe during those peak hours!
| 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 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so too does the UV Index, which plays a crucial role in understanding sun exposure risks. The highest risk months for UV exposure occur from April to August, particularly peaking in June with a UV Index of 9, categorized as very high, allowing for a burn time of just 15 minutes. Visitors and residents should be especially vigilant during these months, adopting protective measures such as wearing sunscreen, hats, and sunglasses, and seeking shade during peak hours. The UV Index drops significantly in January, November, and December, with low exposure categories, easing sun protection needs during these winter months. However, it’s important to remain aware and prepared for UV fluctuations throughout the year.
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 |
| 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 |
| Porthleven | 2 | 3 | 4 | 6 | 7 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |