Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Machuanzi, China, where the climate features distinct seasonal variations. As UV levels can peak significantly during midday—reaching as high as 8—being aware of these fluctuations is essential for preventing sunburn and safeguarding your skin health. With the sun's intensity climbing to its maximum at noon, it’s vital to take protective measures during these hours. Whether you’re exploring the beautiful outdoors or simply commuting, being mindful of UV exposure can help ensure your skin remains healthy and protected in Machuanzi's ever-changing weather.
The UV Index throughout the day displays an intriguing pattern of solar intensity. Starting the morning at a maximum of 1 at 07:00 and 08:00, the index gradually ascends, reaching 3 by 09:00. A noticeable spike occurs at 10:00, hitting 4, and rapidly climbs to a peak of 8 by 13:00. The afternoon sun continues to deliver intense rays, with the index slightly retreating to 7 by 14:00, and declining gradually afterward. By 17:00, the index drops to 3, and as the sun sets, it winds down to 1 by 19:00. If you're planning outdoor activities, the perfect time to soak in the sun would be around 12:00 to 13:00, when UV exposure reaches its zenith. Always remember to protect your skin during these peak hours!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index shows significant seasonal variation, with the highest risk occurring from May through September, when values peak at 10 during the summer months of June, July, and August, categorized as very high. In these months, the recommended burn time is just 15 minutes, indicating a strong need for sun protection. Conversely, during the winter months of January and December, the UV Index drops to 2, signifying a low exposure risk with a burn time of 45 minutes. Visitors and residents should be particularly vigilant during April with a UV Index of 7 and all summer months, applying sunscreen, wearing protective clothing, and seeking shade to minimize sun damage. As fall approaches, the UV Index decreases, but caution should still be exercised in September when it remains elevated at 8.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Machuanzi | 2 | 3 | 5 | 7 | 8 | 10 | 10 | 10 | 8 | 5 | 3 | 2 |
| 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 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |