Last updated: June 2, 2025
In Heshan, China, awareness of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors make informed decisions about sun exposure, particularly in a region known for its Dwa climate, which brings hot summers and can result in elevated UV risks. During peak hours, such as midday, the UV Index can reach dangerously high levels, making it crucial for everyone to stay informed and take protective measures against harmful rays. By keeping an eye on the UV Index, you can protect your skin and enjoy the sunny days that Heshan has to offer!
As the sun rises, the UV Index begins to climb, starting at a gentle 2 at 07:00. By 08:00, it reaches a moderate 4, and as the day progresses, the intensity continues to increase. At 09:00, it spikes to 6, and by 10:00, we see a peak of 7. The sun’s strength culminates at 11:00 with a high of 8, before reaching its zenith at 12:00 with an impressive 9. As the afternoon unfolds, the indices retract; 1:00 PM sees a slight drop to 8, and by 2:00 PM, it settles back to 7. In the later hours, the intensity decreases further, with 5 at 3:00 PM, then 3 by 4:00 PM, and fades to 2 at 5:00 PM. Finally, as the sun sets, the UV Index dwindles to 1 by 6:00 PM and remains steady through 7:00 PM. It’s a reminder to enjoy the sunshine wisely, especially during the midday peak!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | 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 | 5 | moderate | 30 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 |
Throughout the year, the UV Index demonstrates notable seasonal variations that affect exposure risk. January and February have relatively low to moderate UV levels (Index 2-3), with safe burn times of 45 and 30 minutes respectively. As spring approaches, March sees a rise to an index of 5, and by April, it reaches 6, marking the beginning of high-risk months. The most critical period arrives in May and June, where the UV Index peaks at 8-9, indicating very high exposure risk and a reduced burn time of just 15 minutes. July and August maintain this peak, before tapering off in September with a return to a high risk (UV Index 6). October brings a moderate reduction (Index 4), while winter months November and December drop back to low levels. Visitors and residents should be particularly vigilant during May through September, using sunscreen and protective clothing to minimize harmful effects during these high-risk months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heshan | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| 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 |