Last updated: July 2, 2025
In Bac Yen, Vietnam, being aware of the UV Index is crucial for safeguarding your skin health and preventing sunburn. Understanding UV levels helps you plan your outdoor activities effectively, ensuring you take the necessary precautions when the sun's rays are at their strongest. With Bac Yen's Cwa climate, characterized by hot summers and mild winters, residents and visitors alike face significant UV exposure, particularly between 10 AM and 2 PM, when the index peaks at an alarming 15. Stay informed and protect yourself from harmful UV radiation to enjoy the beautiful outdoor scenery safely!
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 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 11 | extreme | 10 min |
11:00 | 13 | extreme | 10 min |
12:00 | 15 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 7 | high | 25 min |
16:00 | 4 | moderate | 30 min |
17:00 | 2 | 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 |
Bac Yen | 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 |