Last updated: May 3, 2025
Understanding the UV Index in Nan'an, China, is crucial for maintaining optimal skin health and preventing sunburn, especially under its humid subtropical climate (Cfa). With UV levels peaking at 13 during midday, awareness of these values can guide locals and visitors in making informed decisions about sun protection. High UV exposure in Nan'an poses significant risks, making it essential to keep track of the UV index throughout the day to enjoy the outdoors safely while safeguarding your skin from potential damage.
The UV Index data reveals a dramatic rise in UV exposure as the day progresses, reaching its peak between 12:00 PM and 1:00 PM with a maximum value of 13. Starting from a low of 1 at 7:00 AM, the index climbs steadily, hitting 5 by 9:00 AM and soaring to 12 by 11:00 AM. This intense period of sun exposure continues until 2:00 PM, when it drops to 11, but the risk remains significant. By 3:00 PM, the index decreases to 7, and as the day winds down, it falls to 1 by 6:00 PM and finally drops to 0 at 7:00 PM. It's crucial to take sun safety measures, especially during those high midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 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 index levels fluctuate significantly, indicating varying risks for sun exposure. January and December experience lower UV indices of 7, categorized as high, with a burn time of 25 minutes. February marks the beginning of higher risks, peaking at 9, considered very high, and leading into March, where the UV index reaches an extreme 12, necessitating a burn time of only 10 minutes. This extreme exposure continues through May and June, maintaining a maximum index of 13. The summer months, particularly July, also reflect this intensity, with similar ratings sustained until August and September, where it drops slightly to 12 and 11, respectively. As the year winds down, October and November revert back to a very high index of 9-10, culminating the season's risks. Visitors and residents are strongly advised to take protective measures during the high-risk months of February through September, ensuring they limit their sun exposure, wear protective clothing, and apply sunscreen regularly to prevent 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 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Nan'an | 7 | 9 | 12 | 11 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |