Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Jiujianfang, China, where the climate can lead to significant sun exposure. A clear comprehension of UV levels helps in preventing sunburn and promoting long-term skin health, making it essential for outdoor activities. With typical peak UV readings reaching 10 around midday, the risks of overexposure are heightened, especially in warm periods of the year. Being aware of these levels allows individuals to take necessary precautions and enjoy the beautiful sunshine without compromising their skin's health.
The UV Index (UVI) throughout the day exhibits a significant rise, peaking at 10 between 11:00 AM and 12:00 PM. Starting from a mild 3 at 7:00 AM, the UVI escalates as the sun climbs, reaching 5 by 8:00 AM and 7 by 9:00 AM. The intensity continues to increase dramatically, hitting 9 by 10:00 AM. After noon, the UVI begins to decline, dropping to 9 at 1:00 PM and further to 7 by 2:00 PM. The afternoon sees a gentle decline to 5 at 3:00 PM, slipping further to 3 by 4:00 PM. As dusk approaches, the UVI stabilizes at a low 1 from 5:00 PM to 7:00 PM, indicating minimal sun exposure risk. Outdoor enthusiasts should plan activities with peak hours in mind to ensure safety and enjoyment under the sun.
| 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 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index demonstrates significant seasonal variations, reflecting changes in sun exposure. January and December present the lowest UV levels, categorized as low, with a burn time of approximately 45 minutes. As we move into February and November, UV exposure escalates to a moderate level, allowing for a burn time of 30 minutes. The high-risk months are from March to August, peaking in July and August with a very high UV Index of 10, where the burn time drops to just 15 minutes. As fall approaches, the UV Index begins to decline, returning to a high category in September and moderating into moderate levels by October. Visitors and residents should take precautions during the high UV months by wearing protective clothing, applying sunscreen frequently, and seeking shade, especially during midday hours, to reduce the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jiujianfang | 2 | 3 | 6 | 7 | 8 | 9 | 10 | 10 | 7 | 5 | 3 | 2 |
| 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 |
| 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 |