Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Xa Tan Thanh, Vietnam, where sun exposure can significantly impact skin health. With peak UV levels reaching a staggering 14 around midday, it's essential to be aware of these fluctuations to prevent sunburn and long-term skin damage. The Aw climate in this region brings intense sunlight, making daily monitoring of UV exposure levels vital for enjoying outdoor activities while safeguarding against harmful effects. Stay informed and protect your skin by keeping an eye on the UV Index!
At sunrise, the UV Index begins its ascent, starting at a mild 2 by 07:00. As the sun rises higher, the intensity increases swiftly, reaching a peak of 14 at both 11:00 and 12:00—the hottest part of the day. From there, the index starts to dip, descending to 9 by 14:00 and continuing down to 6 at 15:00. As afternoon transitions into evening, levels decrease further, plummeting to 1 by 17:00 and tapering off to 0 by 19:00. This hourly dance of UV exposure underscores the importance of sun protection, especially during midday when the UV levels are at their highest. Remember to stay safe and shield your skin when the UV Index is soaring!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 8 | very high | 15 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 | 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 remains consistently high throughout the year, indicating extreme exposure levels from January to October, with values peaking at 16 in March and April. Notably, the high-risk months are February through September, where the UV Index reaches between 14 to 16, resulting in a burn time of just 10 minutes for unprotected skin. Even in October and November, the UV Index remains significant at 13 and 12 respectively, emphasizing the need for caution. Residents and visitors are strongly advised to take protective measures, which include wearing sunscreen, protective clothing, and seeking shade during peak sun hours to mitigate the risks associated with prolonged sun exposure. As a note, December presents a slightly lower risk with a UV Index of 10, allowing a burn time of 15 minutes. Staying informed and proactive during these high UV periods is essential for skin safety.
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 |
| Bien Hoa UVI | 10 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 11 | 10 |
| Xa Tan Thanh | 11 | 14 | 16 | 16 | 15 | 14 | 14 | 15 | 15 | 13 | 12 | 10 |