Last updated: July 2, 2025
Understanding the UV Index in Chaihu, China is crucial for maintaining skin health and preventing sunburn. Throughout the day, UV levels can fluctuate significantly, peaking at a striking 11 between noon and 1 PM, making awareness essential for outdoor activities. With Chaihu's Cfa climate, characterized by warm summers, residents and visitors must pay particular attention to these UV levels to protect themselves from the harmful effects of overexposure. By staying informed about the UV Index, you can ensure safer sun exposure and promote overall skin health in this vibrant region.
The UV Index throughout the day showcases a remarkable rise, peaking impressively at 11 between noon and 1 PM. Starting with a modest 1 at 7 AM, the index escalates to around 3 by 8 AM and rapidly climbs, hitting 5 by 9 AM. The ascent continues as the sun reaches its zenith, soaring to 8 at 10 AM and breaching the 10 mark by 11 AM. As we reach peak sun hours, it stabilizes at 11 for both 12 PM and 1 PM, before gradually descending to 9 at 2 PM and tapering off to 7 by 3 PM. The latter part of the afternoon sees a gentle decline to 4 at 4 PM, finally returning to the morning's low of 1 by 6 PM, and maintaining this relaxed level through 7 PM. It's a vivid reminder of the sun's strength, urging outdoor enthusiasts to stay sun-smart during the intense 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 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 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 | 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 |