Last updated: July 2, 2025
In Changtun, China, awareness of the UV Index is crucial for protecting your skin during daily activities. Understanding the fluctuations in UV levels can help prevent sunburn and long-term skin damage, ensuring your skin remains healthy and radiant. Situated in a Dwa climate zone, Changtun faces significant UV exposure, particularly during midday hours, where the index can peak at a striking 10. This information is vital for residents and visitors alike, empowering them to enjoy the sun responsibly and take essential precautions during those high-risk hours.
The UV Index throughout the day displays a distinct pattern of increasing and decreasing intensity. Starting at a modest 2 at 07:00, the index gradually rises, reaching a moderate level of 3 by 08:00. However, the sun really begins to shine at 09:00, skyrocketing to a notable 5. By 10:00, it hits 7, and between 11:00 and 12:00, we experience the peak UV Index of 10, where sun safety becomes essential! After the zenith at 13:00, the numbers begin their descent, dropping to 8 by 14:00 and then tapering off further to 6 at 15:00. As the afternoon fades, the UV Index dwindles to a soft 4 at 16:00, before settling to a gentle 2 at 17:00 and finally a low 1 for the evening hours, signifying the day's retreat into twilight. Remember to prioritize sun protection during the peak hours when the sun's rays are most intense!
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | 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 |
Throughout the year, the UV Index exhibits significant seasonal variations. January and December see low UV levels (Index 2) where extended sun exposure is relatively safe, allowing for about 45 minutes before skin damage occurs. Moving into February and November, the index rises to moderate levels (Index 3 and 4), shortening burn time to 30 minutes. The UV Index peaks during the summer months, particularly from June to July, reaching a maximum of 10, categorized as very high with a burn time of just 15 minutes. April and May also register alarming UV levels (Index 8 and 9). March starts the transition with high levels (Index 6), leading into summer. August, while slightly lower at Index 9, maintains high risk, followed by September and October returning to high levels (Index 7 and 6) with longer burn times of 25 minutes. Residents and visitors should take necessary precautions, especially between March and October when the UV Index is highest. It is advisable to seek shade, wear protective clothing, and apply sunscreen regularly during these months to minimize the risks of overexposure.
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 |
| Changtun | 2 | 3 | 6 | 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 |