Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Kaiwen, China, where the potential for sunburn and skin damage is significant due to the region’s Cwb climate. As UV levels can soar, peaking at 15 around midday, awareness of these fluctuations helps you make informed decisions about sun protection, safeguarding against harmful effects on your skin and overall health. With typical exposure risks especially high during the sunniest hours, being proactive about UV awareness is essential for enjoying the beautiful outdoors while minimizing potential harm.
As the day unfolds, the UV Index makes a dramatic ascent, starting at a mild 1 at 7:00 AM and quickly climbing to a peak of 15 by 1:00 PM. This short-lived zenith persists into the early afternoon before gradually tapering off, dipping down to 12 at 3:00 PM, and continuing its decline to 3 by 6:00 PM. With values soaring to 14 and 11 around 12:00 and 11:00 AM respectively, it's a clear signal for those outside: the sun's rays are intense, and sun protection is advisable from midday onward. Therefore, plan your outdoor activities with caution, especially during the crucial hours of 10:00 AM to 2:00 PM when the UV index is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the highest risk months occurring from March to September, where the UV Index reaches extreme levels between 12 and 16. Notably, July showcases the peak index of 16, necessitating caution. During these months, the burn time is alarmingly short, often just 10 minutes, highlighting the need for vigilance. Conversely, January and February start the year with very high UV levels (Index of 8 and 10 respectively) and a slightly longer burn time of 15 minutes. As the year transitions into November and December, UV exposure decreases, yet individuals should still remain cautious, particularly in November with a UV Index of 9. Residents and visitors alike should prioritize sun safety by employing protective measures such as sunscreen, wearing protective clothing, and limiting sun exposure, especially during peak hours in these critical 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 |
| 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 |
| Kaiwen | 8 | 10 | 12 | 15 | 15 | 15 | 16 | 15 | 14 | 12 | 9 | 7 |