Last updated: June 2, 2025
Understanding the UV Index in Rendui, China is crucial for protecting your skin and overall health in this unique climate. High UV levels, especially from late morning to early afternoon, can lead to painful sunburns and long-term skin damage if precautions aren't taken. With a typical climate labeled as ET, Rendui experiences significant UV exposure that varies throughout the day, peaking dramatically around noon. Being aware of these fluctuations helps residents and visitors alike to enjoy the sun safely while minimizing risks associated with overexposure.
As the sun rises, the UV Index begins its climb, starting at a mere 0 at 7:00 AM. By 8:00 AM, the index nudges up to 1, indicating a low risk of harm from unprotected sun exposure. However, the real action kicks in at 10:00 AM when it spikes to 6, followed by a dramatic increase to 10 at 11:00 AM, marking the onset of high UV levels. The intensity peaks at 12:00 PM with a blistering 14, and by 1:00 PM, it reaches an impressive 17, maintaining that level until 2:00 PM. As the afternoon progresses, the UV Index gradually declines to 13 by 4:00 PM, and continues to drop, settling at 9 by 5:00 PM. The evening brings relief with the index falling to 5 at 6:00 PM and further down to 2 by 7:00 PM, reminding us of the powerful sun's course through the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 17 | extreme | 10 min |
| 14:00 | 17 | extreme | 10 min |
| 15:00 | 16 | extreme | 10 min |
| 16:00 | 13 | extreme | 10 min |
| 17:00 | 9 | very high | 15 min |
| 18:00 | 5 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
The UV Index experiences significant change throughout the year, peaking during the spring and summer months. Observations indicate that March to September are particularly high-risk months, with the UV Index reaching extreme levels from April through September, peaking at 17 in May, June, July, and August. During this period, the recommended burn time dramatically decreases to just 10 minutes, underscoring the importance of caution. Visitors and residents should prioritize sun safety measures, especially during these summer months, by wearing protective clothing, applying sunscreen with a high SPF, and seeking shade to minimize exposure, as the risk of skin damage escalates significantly. Conversely, the UV Index drops to lower levels in January, February, November, and December, where the exposure category is high or very high, allowing for slightly longer burn times. However, vigilance is still essential year-round to protect against harmful UV radiation.
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 |
| Rendui | 7 | 10 | 14 | 16 | 17 | 17 | 17 | 17 | 15 | 15 | 9 | 7 |