Last updated: June 2, 2025
In Khoai Chau, Vietnam, staying informed about the UV Index is crucial for protecting your skin from the sun's harmful rays. With the region's Cwa climate, characterized by hot summers and mild winters, understanding UV levels can significantly reduce the risk of sunburn and long-term skin damage. As the midday sun peaks with indices reaching 12 around noon, awareness of these levels is essential for outdoor activities, ensuring that you can enjoy the beautiful weather while prioritizing your skin health. Your vigilance today could lead to healthier skin tomorrow!
As the sun rises, the UV Index begins its steady ascent, starting at a mild 2 at 7:00 AM. By 9:00 AM, it reaches a notable 7, signaling the need for sun protection. The peak occurs at 11:00 AM and 12:00 PM, where it hits a maximum of 12, indicating dangerously high levels of UV radiation. After this midday zenith, the index gradually declines, dropping to 6 by 3:00 PM and further to 1 by 5:00 PM, ultimately reaching 0 at sunset. This hourly progression emphasizes the importance of vigilance against UV exposure, particularly during the late morning to early afternoon when the risk is at its highest.
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 | 10 | very high | 15 min |
11:00 | 12 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 8 | 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 |
Throughout the year, UV exposure levels vary significantly, with the highest risks occurring from March to October. During these months, the UV Index frequently reaches extreme levels, peaking at 13 in May, July, August, and September, and presenting a burn time of only 10 minutes. January and December are the months with a lower risk, categorized as high with a UV Index of 7 and a burn time of 25 minutes. Notably, February and November fall under the very high category, making them important to approach with caution as well. To ensure safety, residents and visitors should be vigilant during the high-risk months, applying broad-spectrum sunscreen, seeking shade, and wearing protective clothing during peak sunlight hours.
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 |
Khoai Chau | 7 | 10 | 12 | 12 | 13 | 12 | 13 | 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 |