Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Hongsihu, China, where the unique climate brings both beauty and sun exposure risks. Awareness of UV levels significantly helps in preventing sunburn and protecting skin health, ensuring that your time outdoors remains enjoyable and safe. With peak UV readings soaring to 12 around midday, Hongsihu's semi-arid climate can present particular challenges for sun protection. By staying informed about the daily UV Index, you can take proactive measures to safeguard your skin and embrace the sunny days with confidence.
Today’s UV Index chart presents a clear peak in solar intensity, reaching 12 at 1:00 PM—the prime time for sun exposure. Starting from a gentle 1 at 7:00 AM, the index gradually climbs to a moderate 4 by 9:00 AM. As the day progresses, the index spikes dramatically, hitting 11 between 12:00 PM and 2:00 PM, signaling high UV radiation levels. Even as afternoon approaches, UV levels remain significant at 10 by 3:00 PM, before tapering off to 4 at 5:00 PM and returning to safer levels of 1 by 7:00 PM. For those venturing outside, it’s essential to prioritize sun safety during peak hours, especially between 10:00 AM and 2:00 PM. Stay sun savvy! ☀️
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the levels of ultraviolet (UV) radiation exposure. From January to February, the UV Index rises from 3 to 5, classified as moderate, indicating a burn time of approximately 30 minutes. March marks a significant shift with a high UV Index of 7, shortening the burn time to 25 minutes. The peak months for UV exposure are April through August, during which the Index sky-rockets to extreme levels: 10 to 13 and burn times drop to as little as 10 minutes. September sees a slight decline to 9, but still qualifies as very high, while October brings the Index back down to 7. Not until November and December, when the Index returns to moderate levels of 3 and 4 respectively, can residents and visitors enjoy longer burn times of 30 minutes. During high-risk months—April to August—it is crucial to take precautions such as applying sunscreen, wearing protective clothing, and seeking shade during peak hours to minimize UV exposure and protect skin health.
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 |
| Hongsihu | 3 | 5 | 7 | 10 | 11 | 13 | 12 | 11 | 9 | 7 | 4 | 3 |
| 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 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |