Last updated: June 2, 2025
In Ke Sach, Vietnam, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels not only aids in preventing sunburn but also plays a vital role in maintaining overall skin health. With Ke Sach's tropical climate bringing elevated UV exposure—especially during peak hours when the index can soar to 13—it's essential to stay informed and take necessary precautions. By monitoring UV levels, you can enjoy the beautiful outdoors while keeping your skin safe from the sun’s damaging effects.
The UV Index today tells a compelling story of sun intensity, peaking dramatically as the day unfolds. Starting at a mild 1 at 7:00 AM, it quickly escalates to a notable 4 by 8:00 AM. As we reach 9:00 AM, the index surges to 7, but the real intensity hits between **10:00 AM and 12:00 PM, with a maximum of 13 at noon. This period poses the highest risk, with levels remaining above 10 until 1:00 PM, when it dips slightly to 11. Gradually, the sun's grip weakens, and by 3:00 PM, the index drops to 5, followed by a further decline to 3 by 4:00 PM. As daylight dwindles, so does the UV threat, settling back to 1 by 5:00 PM and eventually fading to 0 by 7:00 PM. For outdoor enthusiasts, midday precautions are critical, while the evening brings relief from harmful rays.
| 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 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | moderate | 30 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 |
Throughout the year, UV exposure remains consistently high, with the highest UV Index readings occurring from March to September, peaking at 16 in March. The months of February to September are particularly high-risk for skin damage, each categorized as "extreme" exposure, where even short periods of sun exposure can lead to burns within just 10 minutes. As a result, it is essential for both visitors and residents to take preventative measures during these months. This includes wearing sunblock, protective clothing, and sunglasses, and seeking shade whenever possible. While the UV Index decreases slightly from October to December, it is still advisable to remain vigilant, especially with the very high category in December, where burn time extends to 15 minutes. Prioritizing sun safety is crucial year-round.
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 |
| Ke Sach | 11 | 14 | 16 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |