Last updated: June 2, 2025
In Weiji, China, understanding the UV Index is crucial for protecting your skin and overall health. As residents navigate the warm Cwa climate, which boasts bright sunny days, awareness of UV levels can prevent painful sunburns and long-term skin damage. With midday UV levels often peaking at a high of 10, it’s essential to stay informed and take protective measures during peak hours, especially between 10:00 AM and 2:00 PM. By monitoring the UV Index, you can enjoy the sun safely while minimizing the risk of harmful effects on your skin.
Throughout the day, the UV Index fluctuated, peaking sharply at 12:00 PM with a maximum value of 10, signaling the most intense sun exposure during midday. As the sun rose, 07:00 AM recorded a mild index of 2, gradually escalating to a moderate 5 by 09:00 AM. The intensity surged to a notable 8 at 10:00 AM, before reaching its zenith at 11:00 AM with 9. Following the peak hour, the index began its descent, dropping to 9 at 1:00 PM and then gradually declining to 7 at 2:00 PM. By late afternoon, the level continued to diminish, landing at 5 by 3:00 PM, and winding down to 2 by 5:00 PM. As evening approached, the UV exposure significantly lessened, tapering off to a mere 1 by 7:00 PM. This data highlights the importance of sun protection during peak hours, particularly between 10:00 AM and 2:00 PM.
| 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 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 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 |
Throughout the year, the UV Index varies significantly, reflecting seasonal changes in sun exposure. High-risk months include March through October, where the UV Index reaches levels categorized as high to very high; notably, April to September consistently shows a UV Index of 9 or 10. During these peak months, the burn time is as short as 15 minutes, emphasizing the need for protective measures. Visitors and residents are strongly advised to limit sun exposure, especially during midday hours, and to utilize sunscreen, hats, and protective clothing. In contrast, January, February, November, and December present a more moderate risk, with longer burn times of 30 minutes; however, caution is still recommended. By staying informed about UV levels and taking appropriate precautions, everyone can enjoy the outdoors safely year-round.
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 |
| Weiji | 4 | 5 | 7 | 9 | 10 | 10 | 10 | 10 | 9 | 8 | 5 | 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 |