Last updated: August 1, 2025
In Houxi, China, understanding the UV Index is crucial for safeguarding your skin and overall health. With its Cfa climate, which offers warm summers and mild winters, residents and visitors alike must be aware of the varying intensity of ultraviolet radiation throughout the day. Notably, during peak hours—especially from 10 AM to 2 PM—the UV Index can soar to dangerous levels, peaking at 13 at noon. This emphasizes the necessity of taking protective measures against potential sunburn and long-term skin damage. By staying informed about daily UV levels, you can enjoy the beautiful outdoors while minimizing your risk of harmful sun exposure.
The UV Index throughout the day reveals a dynamic pattern of solar intensity. Starting from a gentle 1 at 7:00 AM, the index escalates swiftly, peaking at a striking 13 by noon. This midday surge signals the need for sun protection as the index reaches its highest point at 12:00 PM, hovering around 12 to 13 until 1:00 PM. As the afternoon progresses, the intensity begins to wane, dropping to 10 by 2:00 PM and then descending steadily to 7 at 3:00 PM, 4 at 4:00 PM, and eventually dwindling to a safe 1 by 6:00 PM. After 7:00 PM, the UV level flatlines at 0, marking the end of peak sun exposure. Remember, during those peak hours, especially from 10 AM to 2 PM, it's vital to prioritize skin safety!
| 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 | 6 | 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 |
The UV Index exhibits significant seasonal variations, peaking during the summer months. January sees a moderate UV Index of 7, classified as high, with a burn time of 25 minutes. In February, the index jumps to 9, categorized as very high, decreasing burn time to 15 minutes. The risk escalates sharply in March and April, where values reach 11 and 12, respectively, indicating extreme exposure with burn times reduced to just 10 minutes. The summer months of June, July, and August maintain the highest UV Index of 13, with sustained extreme risk and the same short burn time. As fall approaches, the index gradually declines, with September returning to 11 and October to 10, both classified as very high. November mirrors February with a 9, while December drops back to 7. Residents and visitors are advised to take precautionary measures during February through September, ensuring proper sun protection to minimize the risk of 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 |
| Houxi | 7 | 9 | 11 | 12 | 12 | 13 | 13 | 13 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |