Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Chau Thanh, Vietnam. The UV Index serves as a critical guide to help protect against harmful ultraviolet radiation, which can lead to sunburn and long-term skin health issues. With Chau Thanh's tropical climate, the sun’s intensity can quickly escalate, especially around midday when the UV Index can reach a peak of 13, indicating extreme risk. Being aware of these levels empowers you to make informed decisions about sun protection, ensuring you can enjoy the region's beautiful outdoors while safeguarding your skin from potential damage.
The UV Index shows a dramatic rise throughout the morning, starting at a mild 1 at 7:00 AM. As the sun climbs higher, it peaks at an intense 13 from 11:00 AM to 12:00 PM, signaling a high level of UV radiation that necessitates protective measures. The intensity gradually tapers off in the afternoon, dipping to 9 at 2:00 PM, before continuing its decline to 6 by 3:00 PM. By 4:00 PM, the UV Index drops to 3, and as twilight approaches, it settles back down to a safe 0 by 7:00 PM. This data emphasizes the importance of sun safety, particularly during the midday hours when UV exposure is at its highest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 6 | 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 | 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 remains consistently high, with the highest UV Index readings occurring from March to September, peaking at 16 in March. The months of February to September are particularly high-risk for skin damage, each categorized as "extreme" exposure, where even short periods of sun exposure can lead to burns within just 10 minutes. As a result, it is essential for both visitors and residents to take preventative measures during these months. This includes wearing sunblock, protective clothing, and sunglasses, and seeking shade whenever possible. While the UV Index decreases slightly from October to December, it is still advisable to remain vigilant, especially with the very high category in December, where burn time extends to 15 minutes. Prioritizing sun safety is crucial year-round.
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 | 11 | 14 | 16 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |