Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Song Cau, Vietnam, where the sun’s rays can be particularly intense. With a tropical climate characterized by high humidity and strong sunlight, awareness of UV levels can significantly enhance sunburn prevention and overall skin health. During peak hours, especially between 10 AM and 2 PM, UV Index values can soar to 14, indicating a serious risk of harm to unprotected skin. By staying informed about changes in UV exposure, you can enjoy the beautiful beaches and vibrant outdoors of Song Cau with peace of mind, ensuring you protect yourself from potential sun damage.
The UV Index throughout the day showcases significant fluctuations, peaking dramatically at 11:00 AM and 12:00 PM with a maximum reading of 14. Early morning hours start off mild, with a UVI of 2 at 7:00 AM and reaching 4 by 8:00 AM. As the sun ascends, the index climbs rapidly, hitting 8 at 9:00 AM, then escalating to a striking 12 by 10:00 AM. The zenith occurs just before noon, where the intensity remains high at 14. The afternoon sees a gradual decline, dropping to 9 by 2:00 PM and further down to 5 by 3:00 PM. As the day wanes, the index diminishes to a gentle 1 after 5:00 PM, before finally reaching 0 as evening sets in at 7:00 PM. It's a clear reminder of the sun's powerful rays—protect yourself during those peak hours!
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 | 12 | extreme | 10 min |
11:00 | 14 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 2 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index experiences extreme levels year-round, peaking in March and April at 15, with consistently high values ranging from 11 to 15 from January to October. The high-risk months for UV exposure are clearly February to April, where the index regularly reaches 13 or higher, resulting in a rapid burn time of just 10 minutes. Even in November, the UV levels remain elevated at 11, while December sees a slight decrease to 9 but still classified as very high, with a burn time of 15 minutes. Visitors and residents are encouraged to take precautionary measures throughout the year, especially during peak months. This includes wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage.
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 |
Song Cau | 11 | 13 | 15 | 15 | 14 | 13 | 14 | 14 | 14 | 13 | 11 | 9 |