Last updated: August 1, 2025
In Nanhu, China, staying informed about the UV Index is crucial for safeguarding your skin health and preventing painful sunburns. With the climate classified as Dwb, residents and visitors alike need to be particularly aware of the high UV levels that can peak at 12 during midday hours. Understanding these fluctuations not only helps in making informed decisions about sun protection but also promotes long-term skin safety. As UV exposure risks can escalate quickly, knowing when to seek shade or apply sunscreen is essential for enjoying the beautiful sunny days without compromising your health.
At sunrise, the UV Index begins its steady climb, starting at a safe 1 at 07:00. As the morning progresses, it escalates to 2 by 08:00 and reaches a pleasant 4 by 09:00. However, the real intensity hits between 10:00 and 13:00, with the UV Index peaking at a scorching 12 at 12:00, indicating a high risk of harm from unprotected sun exposure. As the afternoon unfolds, levels gradually descend, hitting 9 at 15:00 before tapering off to 4 by 17:00. By the evening hours, the index returns to a mild 1 by 19:00, reminding us of the importance of sunscreen amidst the sun's powerful midday rays.
| 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 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so too do the UV levels, significantly impacting both visitors and residents. January starts with a moderate UV Index of 4, allowing for a burn time of 30 minutes, but by February, the risk escalates to a high UV Index of 6, reducing burn time to 25 minutes. The real concern arises from March through September, where the UV Index reaches very high and extreme levels, peaking at 13 in June. During this critical period, recommended burn times drop to as little as 10 minutes. Particularly, the months of May to September are classified as high-risk, necessitating precautionary measures such as sunscreen, protective clothing, and limited sun exposure, especially during peak hours. As autumn approaches, the UV levels decrease, with October reflecting a very high index of 8 before returning to moderate levels by November and December. Residents and visitors should remain vigilant and adapt their sun protection strategies accordingly throughout the year, especially during summer 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 |
| Nanhu | 4 | 6 | 8 | 10 | 12 | 13 | 12 | 12 | 11 | 8 | 5 | 3 |
| 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 |