Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Ru'ao, China, where the region's Cfa climate brings varied exposure to UV radiation throughout the day. With peak levels reaching as high as 12 around midday, awareness of UV levels is essential for preventing sunburn and safeguarding skin health. By recognizing the daily fluctuations in UV exposure, you can take proactive steps to protect yourself and enjoy the great outdoors more safely. Stay informed and make sun safety a priority to keep your skin healthy under the Ru'ao sun!
At sunrise, the UV Index begins at a gentle 2 by 07:00, but as the sun rises higher, the intensity quickly escalates. By 09:00, it reaches a moderate 7, signaling outdoor enthusiasts to apply sunscreen. The peak comes at 11:00 and 12:00, where the index peaks at a striking 12, indicating very high levels of UV radiation. As the afternoon progresses, the index gradually decreases, dipping to 8 by 14:00 and further dropping to 5 by 15:00. In the late afternoon and evening, the UV Index retreats to 3 by 16:00, finally settling at 1 by 17:00 and fading to 0 after 19:00. This daily cycle highlights the importance of sun safety during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
As the seasons change, so do the UV Index levels, significantly affecting the risk of skin damage from sun exposure. High-risk months for UV exposure include February through September, where the Index peaks at 12 during May to September, classified as extreme, allowing for a burn time as quick as 10 minutes. Even in March and April, with a UV Index of 10, the exposure remains very high. Residents and visitors are advised to take precautions during these months, such as seeking shade, wearing protective clothing, and applying sunscreen regularly. In contrast, the UV Index decreases in the late fall and winter months, with levels dropping to 5 in December, indicating a moderate risk, thereby allowing for longer safe exposure times. Adapting sun safety practices year-round is essential for protecting skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
| Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
| Ru'ao | 6 | 8 | 10 | 10 | 12 | 12 | 12 | 12 | 11 | 8 | 7 | 5 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |