Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Haitou, China, as it directly influences skin health and sunburn prevention. With the region's Cwa climate, characterized by hot summers and moderate UV exposure, awareness of daily UV levels can help you enjoy the sun safely. For instance, peak UV levels in Haitou soar to 10 between 11 AM and 1 PM, posing significant risks for skin damage. By keeping an eye on the UV Index, you can protect yourself and your loved ones from harmful effects while basking in the vibrant sun of Haitou.
The UV Index data reveals an interesting pattern throughout the day, peaking during the midday hours. Starting at 07:00, the index begins at a modest 2, gradually climbing to an impressive 10 by 11:00 and holding steady until 13:00. This high UV exposure hour signals the need for sunscreen or protective clothing. As the afternoon progresses, the index gently descends, tapering down to 8 by 14:00, and then down to 6 at 15:00. The sun's intensity continues to wane, with the index falling to 3 at 16:00 and further dropping to 1 by 18:00 and 19:00. Planning outdoor activities? Aim for the morning or early afternoon when the sun is at its brightest but remember to stay protected during those peak hours!
| 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 | 8 | very high | 15 min |
| 11:00 | 10 | 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 | 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, UV exposure varies significantly, with the highest risk occurring during the summer months of May through August, when the UV Index peaks at 10 and falls under the very high exposure category. During this time, the burn time is reduced to just 15 minutes, necessitating extra precautions for visitors and residents. As spring approaches, the UV Index begins to climb from 3 in January to 8 in April, marking the start of increasing risk, particularly in March when it reaches 7. As we move into fall, the UV Index gradually decreases, though September still poses a very high risk at 8, before tapering off to moderate levels in the winter months. It's essential for everyone to remain vigilant about sun safety, particularly from March to September, wearing protective clothing, applying sunscreen, and seeking shade during peak hours to minimize the risk of sunburn and long-term skin damage.
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 |
| Haitou | 3 | 5 | 7 | 8 | 10 | 10 | 10 | 10 | 8 | 7 | 5 | 3 |
| 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 |