Last updated: May 3, 2025
Understanding the UV Index in Lao Chai, Vietnam is crucial for maintaining optimal skin health and preventing sunburn. This vibrant region, characterized by its Cfa climate, experiences significant UV radiation levels that can vary throughout the day. With peak UV readings reaching as high as 15 around noon, it’s essential to be aware of the risks associated with overexposure to sunlight. By keeping an eye on the UV Index, residents and visitors alike can take proactive measures to protect their skin and enjoy the stunning landscapes of Lao Chai safely. Whether you're exploring its breathtaking rice terraces or hiking in the lush mountains, staying informed about UV levels is key to a fun and healthy outdoor experience.
As the sun climbs higher, so does the UV Index, peaking at a striking 15 at noon. Starting off the day at a mild 2 at 07:00, the index steadily rises, reaching 11 by 10:00. By 11:00, it soars to 14, highlighting the intensity of ultraviolet radiation. It's at 12:00 that the UV Index hits its highest point, urging caution for those outdoors. As the afternoon progresses, the index gradually declines to 10 at 14:00, before dipping further to 1 by 17:00. As evening settles in, the UVI drops to 0 by 19:00, signaling that the day’s sunburn risk has passed. Stay protected during those midday hours when UV exposure is at its peak!
| 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 | 14 | extreme | 10 min |
| 12:00 | 15 | 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 |
The UV Index reflects significant seasonal fluctuations, with high-risk months identified from March to October, during which the index remains consistently between 13 and 15, categorizing these periods as extreme exposure. Particularly, May and July are the peak months for UV exposure, necessitating vigilant sun safety precautions with a burn time of just 10 minutes. In contrast, January and November present very high conditions with slightly longer burn times of 15 minutes. Visitors and residents are advised to prioritize sun protection measures such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade, especially during midday hours when UV radiation is at its highest. As winter approaches, UV levels decrease, but caution is still advisable in early spring and late fall.
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 |
| Lao Chai | 8 | 10 | 13 | 13 | 15 | 14 | 15 | 14 | 14 | 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 |