Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Shilu, China, where seasonal climate patterns can lead to significant daily exposure to harmful UV rays. With peak UV levels typically reaching a maximum of 11 around midday, awareness of these fluctuations is essential for sunburn prevention and maintaining overall skin health. In this Cfa climate zone, where the sun can be particularly intense, knowing when to seek shade and apply sunscreen can make all the difference in protecting your skin from long-term damage. Prepare yourself with the knowledge you need to enjoy the sunshine safely!
The UV Index for the day follows a dynamic trend, peaking during the midday hours. Starting at a modest 2 at 7:00 AM, the intensity gradually intensifies, reaching 4 by 8:00 AM. As the sun climbs higher, the index escalates significantly, hitting a striking 9 at 10:00 AM and reaching its zenith of 11 at 12:00 PM. After this peak, a gradual decline sets in, with the index dropping to 5 by 3:00 PM before tapering off to 1 by 5:00 PM. The day concludes with a UV Index of 0 by 7:00 PM, signaling a clear drop in potential UV exposure. It's a reminder to stay sun-smart, especially during the midday hours when the UV rays are at their strongest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 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 |
Throughout the year, seasonal changes in UV Index highlight varying risks associated with sun exposure. The high-risk months are primarily from March through August, where the UV Index reaches very high to extreme levels, particularly peaking in June, July, and August at an index of 11. During these months, the recommended burn time drastically decreases to just 10 minutes. Residents and visitors should take precautions by wearing sunscreen, protective clothing, and seeking shade during peak sun hours. In contrast, the UV Index drops significantly from October to December, where exposure risks are lower, transitioning from moderate to high levels but allowing for longer burn times. It's crucial to remain vigilant even in these months, but the urgency of sun protection is paramount during the peak summer months.
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 |
| Shilu | 5 | 6 | 9 | 9 | 10 | 11 | 11 | 11 | 10 | 7 | 6 | 4 |
| 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 |
| 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 |