Last updated: August 1, 2025
In But Son, Vietnam, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you prevent sunburn and limit long-term damage caused by excessive sun exposure. With a tropical climate characterized by high humidity and intense sunlight, But Son residents and visitors face significant UV exposure risks, especially during peak hours when the index can soar to a notable 14 around noon. Stay informed and take the necessary precautions to safeguard your skin while enjoying the beautiful outdoors!
At dawn, the UV Index starts softly at 2 by 07:00, suggesting a low risk for sun exposure. As the morning progresses, it escalates to 4 by 08:00 and reaches 7 at 09:00, indicating a moderate level of sun intensity. The day peaks with an impressive 14 at 12:00, where sun safety becomes crucial as the risk is rated high. Afternoon hours see a gradual decline from 13 at 13:00 down to 10 by 14:00, before dropping further to 6 at 15:00. As the sun begins to set, the UV Index dwindles to 3 by 16:00, and finally settles at 1 by 17:00 and 18:00, with a complete drop to 0 by 19:00, signaling that the sun's rays are no longer a concern. Always remember to protect your skin during those high UV periods!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 10 | very high | 15 min |
11:00 | 13 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 10 | 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 fluctuations, with the highest risks occurring during the summer months. From March through October, the UV Index rises to extreme levels, peaking at 14 in July, August, and September, where a mere 10 minutes of unprotected exposure can lead to skin damage. Conversely, January and February also present high risks with UV Index values of 8 and 10 respectively, while November reverts to very high at 9. Residents and visitors should take precautions, especially from March to October, by seeking shade, wearing protective clothing, and applying sunscreen to safeguard against harmful UV rays. During the winter months, although the risks decrease, it remains essential to remain vigilant, particularly in January and February.
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 |
But Son | 8 | 10 | 12 | 13 | 13 | 13 | 14 | 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 |