Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Shanwang, China, where the subtropical Cwa climate brings varying levels of sun exposure throughout the year. With peak UV levels reaching 10 during midday hours, awareness of UV intensity is essential for sunburn prevention and maintaining long-term skin health. By grasping the nuances of UV exposure in Shanwang, you can take informed precautions against harmful rays, allowing you to enjoy the warm sunshine safely. Whether you're spending a day outdoors or simply commuting, knowing the UV Index can make all the difference in your well-being.
The UV Index data reveals a dynamic pattern throughout the day, peaking during the midday sun. At 7:00 AM, the index starts modestly at 2, gradually climbing to 3 by 8:00 AM. As the sun rises higher, the 9:00 AM reading hits 5, but things really heat up by 10:00 AM with a stunning peak of 8. The intensity reaches its zenith at 12:00 PM, soaring to 10, before beginning a gradual decline. By 1:00 PM, the value slips to 9, followed by a descent to 8 at 2:00 PM. The late afternoon sees a drop to 6 at 3:00 PM, and by 4:00 PM, the index further diminishes to 3. As the sun sets, the numbers continue to dwindle to 1 by 6:00 PM, settling at 1 just before nightfall at 7:00 PM. It's clear that during the core hours, sun protection is essential!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, indicating varying levels of sun exposure risk throughout the year. From January to February, the UV levels are moderate (3-5), allowing for longer safe exposure times of about 30 minutes. However, as we move into March and through summer months, the UV Index soars to high (7) and very high (8-10) levels, particularly from April to August, when the burn time decreases sharply to just 15 minutes. September marks a slight decline in UV intensity but remains very high at 8. In contrast, October through December sees a return to moderate levels, with burn times reverting to 25-30 minutes. Visitors and residents should exercise caution during the high-risk months of April through September, taking protective measures such as wearing sunscreen, hats, and sunglasses, and seeking shade during peak sun hours to minimize skin damage.
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 |
| Shanwang | 3 | 5 | 7 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
| 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 |