Last updated: August 1, 2025
In Trang Bom, Vietnam, understanding the UV Index is crucial for protecting your skin from harmful ultraviolet rays. With the region's tropical climate, residents and visitors alike face heightened risks of sunburn and skin damage, particularly during the peak hours when the UV Index soars to levels as high as 14 around noon. By monitoring UV levels, you can take proactive measures to safeguard your skin health and enjoy the outdoors with confidence. Whether you’re exploring the vibrant landscapes or simply enjoying a sunny day, knowing the UV Index can make all the difference in minimizing exposure to harmful rays.
The UV Index during the day showcased a dynamic shift, beginning at a low 1 at 07:00, then escalating to a moderate 4 by 08:00. As the sun climbed higher, the intensity peaked at a formidable 14 around 12:00, marking it as the most intense hour of the day. Following this, the index gradually descended, hitting 12 at 13:00, before tapering off to 9 at 14:00. The afternoon witnessed a noticeable decline, with values plummeting to 5 by 15:00, and further reducing to 3 at 16:00. As evening approached, the UV Index dwindled to 1 by 17:00, tapering off to 0 by 19:00. This data underscores the importance of sun safety during the midday hours, when the UV levels are notably elevated.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 12 | extreme | 10 min |
| 14:00 | 9 | 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 demonstrates significant seasonal variation, with high-risk months typically occurring from February to October, where the index remains consistently in the extreme range, peaking at 15 in March and April. In these months, the burn time is notably brief at just 10 minutes, indicating a heightened risk of skin damage. January and December mark the transition months with a very high index of 10, offering slightly longer burn times of 15 minutes. For both residents and visitors during these months, it is crucial to adopt sun protection measures, such as wearing sunscreen, protective clothing, and seeking shade when possible, particularly during midday hours when UV exposure is at its highest. Staying informed and proactive can significantly mitigate the risks associated with excessive sun exposure.
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 |
| 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 |
| Trang Bom | 10 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 11 | 10 |
| Bien Hoa UVI | 10 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 11 | 10 |