Last updated: May 3, 2025
Understanding the UV Index in Chaihu, China is crucial for protecting your skin and maintaining overall health while enjoying outdoor activities. With peak UV levels reaching an intense 11 at noon, awareness of these fluctuations can significantly help in preventing sunburn and long-term skin damage. Chaihu's humid subtropical climate (Cfa) means residents and visitors alike face heightened exposure risks, particularly during the summer months when UV radiation is most intense. By staying informed about the UV Index, you can make smarter decisions about sun protection and enjoy the beautiful outdoors safely.
As the sun rises and begins to shine, the UV Index gradually climbs, peaking at an impressive 11 at noon, making it crucial to take protective measures. From a gentle 1 at 07:00, the index steadily increases, hitting 5 by 09:00. By 10:00, it surges to 7, and just before lunchtime, it reaches its highest point at 11. This is the perfect time to seek shade or apply sunscreen. As the afternoon progresses, the index starts to drop: 10 at 13:00, 9 at 14:00, and then tapering off to 6 at 15:00, before descending to a safe 1 by 18:00. This data highlights the need for sun protection during the peak hours to ensure a safe and enjoyable day outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | 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 | 1 | low | 45 min |
As the seasons change, so does the UV Index, which significantly impacts sun exposure risks. January and February present a moderate risk with a UV Index of 5, allowing for a burn time of 30 minutes. However, from March to August, the UV Index spikes, reaching an extreme level of 11 during the summer months, where a mere 10 minutes of exposure can lead to burns. This makes March to August the high-risk period, especially in April and May when the index reaches its peak. September and October maintain a very high level at 10 and 8, respectively, with shorter burn times of 15 minutes. November sees a shift to a high risk with a UV Index of 6, and December eases to a moderate risk. Residents and visitors are advised to take precautions during the high-risk months by using sunscreen, wearing protective clothing, and seeking shade to minimize UV exposure and potential 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 |
| Chaihu | 5 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 8 | 6 | 4 |
| 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 |