Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Chengjiang, China, where the subtropical climate can lead to significant sun exposure. With peak UV levels soaring to a high of 13 between noon and 1 PM, knowing how to evaluate these levels is essential for effective sunburn prevention and overall skin health. As you explore Chengjiang’s beautiful outdoor spaces, being mindful of UV risks can help you safeguard your skin and enjoy your time under the sun more safely. Stay informed and protect yourself against excessive UV exposure, especially during the sunniest hours of the day!
The UV Index showcases a dynamic increase throughout the day, peaking at 13 around 12:00 PM. Starting from a gentle 1 at 7:00 AM, the index steadily climbs as the sun ascends, reaching 6 by 9:00 AM. The intensity becomes palpable by 11:00 AM with a sharp rise to 12, before hitting its zenith at 13 at noon, prompting caution for outdoor activities. As the afternoon unfolds, the levels begin to decline, dipping to 10 by 2:00 PM and gradually falling to 0 by 7:00 PM, signaling safer conditions for evening strolls. It’s essential to stay protected during the midday hours when the sun's rays are most intense!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure levels significantly fluctuate, with high-risk months primarily occurring from February to September. The UV Index peaks during May to August, showcasing extreme levels at 13, where the burn time is a mere 10 minutes. March and April also exhibit extreme levels (11), emphasizing the importance of sun protection during these months. As temperatures rise, it’s crucial for visitors and residents alike to take necessary precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours. As the year progresses, the UV Index decreases, reaching very high levels in October and November. Notably, the burn times extend to 15 minutes in these months, but caution should still be exercised. In January and December, while the risk is lower, with the UV Index at 7 and 6 respectively, maintaining protective measures remains advisable.
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 |
| Chengjiang | 7 | 9 | 11 | 11 | 13 | 13 | 13 | 13 | 11 | 10 | 8 | 6 |
| 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 |