Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Guantun, China, especially given its Dwa climate, which can lead to heightened sun exposure during peak hours. Awareness of UV levels directly correlates with effective sunburn prevention and overall skin health, as harmful rays can cause both immediate and long-term damage. With UV Index values soaring to 10 between 11:00 AM and 12:00 PM, it’s vital to take protective measures during these hours to mitigate risks associated with sun damage and maintain healthy skin. Staying informed empowers you to enjoy the sunny climate safely!
The UV Index today showcases a dramatic rise in intensity, peaking at 10 between 11:00 and 12:00. Starting from a gentle 2 at 07:00, the index steadily climbs, reaching a moderate 6 by 09:00. As the sun climbs higher, it becomes formidable, hitting 9 at 10:00 and reaching its zenith at noon. The afternoon sees a gradual decline, with values dropping to 7 at 14:00 and tapering off to 5 by 15:00. As the sun begins to set, the risk dims significantly, falling to 3 at 16:00 and tapering down to a mere 1 by 17:00, lingering at that low level until sunset. For optimal sun safety, it’s advisable to seek shade during peak hours when the UV Index soars!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index exhibits noticeable seasonal changes, indicating varying levels of sun exposure risk. January and December are characterized by a low UV Index (2), with safe burn times of 45 minutes. As spring approaches, the index rises to a moderate rating of 3 in February and 5 in March. The transition to summer brings significantly higher UV levels, peaking in July at a critical 10, categorizing it as very high, with a burn time of only 15 minutes. May and June also carry very high values (8 and 9, respectively). August begins a gradual decline, yet still remains at a very high level of 9. The fall months see a reduction to high (September) and moderate (October and November) exposure, with burn times increasing again to 25 and 30 minutes respectively. Visitors and residents should exercise heightened caution from April to August, with protective measures, such as sunscreen and appropriate clothing, being essential during these high-risk months for UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guantun | 2 | 3 | 5 | 7 | 8 | 9 | 10 | 9 | 7 | 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 |