Last updated: July 2, 2025
Understanding the UV Index in Yen Phu, Vietnam is crucial for maintaining skin health and preventing sunburn in a region known for its Cwa climate. With peak UV levels reaching a staggering 14 between noon and 1 PM, awareness of daily UV exposure can make a significant difference in your outdoor activities. From avoiding harmful sunburns to reducing the risk of long-term skin damage, knowing the UV Index empowers residents and visitors alike to take necessary precautions. Given Yen Phu's tropical setting, where the sun shines brightly most of the year, staying informed about UV levels is not just beneficial—it's essential for a healthy lifestyle.
The UV Index throughout the day showcases a dramatic rise, peaking at 14 at noon, making midday the optimum time to be cautious. Starting from a mild 2 at 7 AM, the index escalates steadily, hitting 10 by 10 AM and soaring to an intense 13 by 11 AM. By 12 PM, the sun’s rays reach their maximum intensity, prompting anyone outdoors to take protective measures. However, as the afternoon progresses, the UV levels begin to gradually decline, dropping back to 7 by 3 PM and continuing to decrease to a safe 0 after 7 PM. This hourly pattern of the UV Index underscores the importance of being sun-smart during the 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 | 14 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 3 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal changes, with the highest risk occurring from March to October. During this period, March through August consistently records an extreme exposure category, peaking at 14 in May, July, and August, where the burn time drops to just 10 minutes. September also maintains a high index of 13, ensuring that visitors should remain vigilant. Conversely, November and December see a decline, but January and February still exhibit very high levels, with burn times of 15 minutes. It is crucial for residents and visitors to protect their skin during these high-risk months by seeking shade, wearing protective clothing, and applying sunscreen regularly.
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 |
Yen Phu | 8 | 10 | 12 | 12 | 14 | 13 | 14 | 14 | 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 |