Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Rensha, China, where the Cwa climate brings hot summers and significant sun exposure. Awareness of UV levels helps protect against the harmful effects of the sun, including sunburn and long-term skin damage. Typically peaking at an intense UV Index of 12 around midday, the risk of overexposure is high during the hottest hours. By staying informed about the daily UV Index, residents can take proactive measures to safeguard their skin health while enjoying the beautiful sunny days in Rensha.
The UV Index reveals a dynamic dance of sun intensity throughout the day, peaking dramatically at the highest levels between 12:00 PM and 1:00 PM. Starting the morning gentle with a UV Index of 1 at 7:00 AM, it quickly escalates as the sun rises, hitting 2 by 8:00 AM and surging to 11 by noon. The maximal exposure occurs at 1:00 PM with a striking 12, indicating a period of high sun intensity that calls for caution. As the afternoon progresses, the index gradually declines, reaching a comfortable 3 by 5:00 PM and settling back to 1 by 7:00 PM. This rhythmic pattern serves as a reminder to stay sun-safe during peak hours!
| 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 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, marking March through August as high-risk months for sun exposure. The UV Index peaks at 12 in July and August, indicating extreme exposure conditions with a burn time of just 10 minutes. Transitioning from winter to spring, the Index climbs sharply from moderate levels in January (5) to very high levels by March (8) and April (10), before reaching its highest in the summer months. As winter arrives, the Index drops back to moderate (4) in December, suggesting a reprieve from harmful UV rays. Visitors and residents are advised to take precautionary measures during high UV months, such as wearing protective clothing, using sunscreen, and seeking shade, especially during peak sunlight hours to safeguard against 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 |
| 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 |
| Rensha | 5 | 6 | 8 | 10 | 11 | 11 | 12 | 12 | 10 | 9 | 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 |