Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Yen Chau, Vietnam, where the climate is characterized as Cwa, featuring distinct wet and dry seasons. With peak UV levels reaching 14 during midday hours, being aware of these fluctuations is essential for sunburn prevention and promoting skin health. High UV exposure not only increases the risk of skin damage but can also lead to long-term health issues. By monitoring the UV Index, you can make informed decisions on sun protection, ensuring your time outdoors in this beautiful region remains safe and enjoyable.
As the sun rises, the UV Index starts at a moderate level of 2 at 7 AM, gradually increasing to a peak of 14 by noon. The intensity is most striking at 11 AM and 12 PM, where exposure becomes critical. After this time, the index begins a gradual decline, dropping to 10 at 2 PM and continuing downwards to a mere 1 by 5 PM. Sun-seekers and outdoor enthusiasts should be especially cautious from 9 AM to 1 PM when the UV levels are at their highest, reaching their zenith with an extreme 11 at 10 AM. Remember to protect your skin under this midday sun!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 11 | extreme | 10 min |
11:00 | 14 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 6 | high | 25 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 |
The UV Index experiences notable fluctuations throughout the year, peaking during the summer months. January and December have a UV Index of 8 with a very high exposure category and a burn time of 15 minutes. As we move into the spring, values rise sharply, reaching a maximum of 15 in July, categorized as extreme, with a burn time as short as 10 minutes. High-risk months include March through October, where the index stays in the extreme category, emphasizing the importance of sun protection. Visitors and residents should take precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when the sun's rays are most intense. As the UV levels decrease in late fall and winter, vigilance should still be maintained to prevent sunburn.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hanoi UVI | 8 | 10 | 12 | 12 | 13 | 12 | 12 | 13 | 13 | 11 | 9 | 7 |
Haiphong UVI | 8 | 10 | 12 | 13 | 12 | 13 | 13 | 13 | 13 | 11 | 9 | 7 |
Yen Chau | 8 | 10 | 13 | 13 | 14 | 14 | 15 | 14 | 14 | 12 | 10 | 8 |
Da Nang UVI | 10 | 12 | 14 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 10 | 9 |
Ho Chi Minh City UVI | 10 | 13 | 15 | 14 | 14 | 12 | 13 | 14 | 13 | 13 | 11 | 10 |
Bien Hoa UVI | 10 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 11 | 10 |