Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Yongyang, China, where the subtropical climate promotes strong sun exposure year-round. Being aware of UV levels helps prevent sunburn and protects long-term skin health, particularly during peak hours when the index can reach a high of 11 around midday. With a climate classified as Cfa, Yongyang experiences considerable sunlight, making it essential to monitor the UV Index regularly to safeguard against potential skin damage. Whether you're enjoying an outdoor activity or simply soaking up the sun, knowing the UV Index will empower you to make informed decisions for your skin’s protection.
The UV Index paints a vivid picture of the sun's intensity throughout the day. Starting with a gentle 2 at 7:00 AM, the index climbs steadily, reaching 3 by 8:00 AM. As the sun rises higher, it peaks at an impressive 11 at noon, signaling a time when sun protection is crucial. The index begins to taper off in the afternoon, with readings of 10 at 1:00 PM and 8 at 2:00 PM, before gradually decreasing to 6 at 3:00 PM. By late afternoon, the UV Index returns to a more moderate 3 at 4:00 PM, and continues to decline, settling at 1 by 6:00 PM. It’s clear that the midday sun demands respect, making awareness of UV levels essential for outdoor safety.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | 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, reflecting the varying intensity of ultraviolet radiation throughout the year. January and December experience moderate UV levels, with burn times of 30 minutes, while February sees an increase to high levels, prompting reduced exposure of just 25 minutes. The high-risk months are from March to August, where the UV Index peaks at 11 during June and July, classifying these months as having extreme exposure risk and requiring careful management of sun exposure, with a burn time of only 10 minutes. Visitors and residents should ideally plan outdoor activities for early mornings or late afternoons, seek shade during peak sun hours, and use sun protection, such as broad-spectrum sunscreen, hats, and sunglasses, particularly during March through August when burn times are significantly shorter. As fall and winter approach, the UV index gradually decreases, making outdoor time less risky, but caution is still advised during the transitional months.
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 |
| Yongyang | 5 | 6 | 8 | 10 | 10 | 11 | 11 | 10 | 10 | 8 | 5 | 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 |