Last updated: August 1, 2025
In Than Uyen, Vietnam, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels not only helps in preventing sunburn but also plays a significant role in maintaining long-term skin health. With the region's Cfa climate, residents and visitors alike face varying UV exposure risks throughout the day, especially during peak hours when the index can soar to 15. Being aware of these levels enables effective sun safety measures, ensuring a more enjoyable and healthier experience under the sun.
As the sun rises, the UV Index begins its ascent, starting at a mild 2 at 07:00. By 08:00, it ramps up to 4, signaling a more intense sun. The peak arrives at 12:00, where the index soars to a striking 15, indicating a risk of harm from unprotected sun exposure. The intensity slightly wanes in the afternoon, dipping to 11 at 14:00, before continuing to descend to 7 by 15:00. As the day fades to evening, the UV Index drops to 2 at 17:00, then plummets to 1 by 18:00, and finally settles at a safe 0 after sunset. It's a reminder to protect your skin during the midday hours when the sun's rays are strongest!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 10 | very high | 15 min |
11:00 | 13 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 4 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, UV exposure increases significantly, peaking during the summer months from March to October, with the highest UV Index recorded in July at 15, classified as extreme exposure. The high-risk months for sunburn include March to October, with burn times as short as 10 minutes during peak hours in these months. Conversely, January to February and November have very high levels with slightly longer burn times of 15 minutes, while December sees a drop to a high classification with a burn time of 25 minutes. Visitors and residents are advised to take proactive sun safety measures, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sun hours, particularly in the spring and summer months when UV levels are at their most dangerous.
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 |
Than Uyen | 8 | 10 | 13 | 13 | 14 | 14 | 15 | 14 | 13 | 12 | 9 | 7 |
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 |