Last updated: June 2, 2025
In Chau Thanh, Vietnam, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the daily UV levels can provide essential insights into how to protect yourself from the harmful effects of UV radiation, especially during peak hours. Located in a tropical climate, Chau Thanh experiences intense sunlight, with UV Index values reaching a maximum of 13 between 11:00 AM and 12:00 PM, posing significant risks for skin damage. By staying informed about the UV Index, you can enjoy the beautiful outdoor activities this vibrant area offers while safeguarding your skin from potential harm.
The UV Index throughout the day showcases a dynamic rise and fall, reflecting the sun's intensity. Starting at a mild 2 by 7:00 AM, it gains momentum, reaching a moderate 4 at 8:00 AM. By 9:00 AM, the UV Index peaks to a 7, and then surges to a striking 10 by 10:00 AM. The midday sun is relentless, pushing the index to a maximum of 13 at both 11:00 AM and 12:00 PM. As the afternoon unfolds, there is a gradual decline; it drops to 12 at 1:00 PM, further decreasing to 9 by 2:00 PM. The late afternoon sees the UV Index easing to 5 at 3:00 PM, before trailing off into the evening with a gentle 3 at 4:00 PM. As twilight approaches, the index tapers down to 1 by 5:00 PM and remains at this level until 7:00 PM, finally hitting 0 by 8:00 PM. Stay protected during those peak hours!
| 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 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | 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 |
The UV Index exhibits significant seasonal variation, peaking between February and September, when it reaches extreme levels of 14-15, resulting in a burn time of just 10 minutes for unprotected skin. January and December are slightly lower with a UV Index of 10, classified as very high, allowing for a burn time of 15 minutes. Notably, the months from February to November are categorized as high-risk, necessitating extra precautions for visitors and residents who plan to spend time outdoors. It is essential to wear sunscreen, protective clothing, and seek shade during peak hours to mitigate the risk of skin damage, especially during this high-risk period.
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 |
| Chau Thanh | 10 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 14 | 13 | 11 | 10 |