Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Co GJo, Vietnam, where high levels of ultraviolet radiation can pose significant risks throughout the day. With a climate characterized by abundant sunshine, awareness of UV levels can help prevent sunburn and long-term skin health issues. The UV Index in Co GJo peaks at a striking 13 around noon, signaling extreme risk for sun exposure; thus, knowing when to seek shade and apply sunscreen is essential for your well-being. Stay informed and protect your skin as you enjoy the sunny days in this vibrant region!
As the sun rises, the UV Index starts off low at 1 by 07:00, perfect for a leisurely morning. However, it quickly climbs to 3 by 08:00 and then skyrockets to a peak of 13 by noon. The intensity of the sun is unmistakable, with the highest reading of 12 at 11:00 and gradually tapering off through the afternoon. By 15:00, the index drops to 5, providing a brief respite before sinking to 3 by 16:00 and ultimately returning to 1 by 17:00. As daylight fades, UV exposure diminishes, ending the day at a safe 0 by 19:00. This data serves as a reminder to protect your skin during peak hours, especially between 10:00 and 14:00, when the UV Index soars to its highest levels!
| 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 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | 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 |
Throughout the year, the UV Index experiences significant changes, particularly peaking in the first half. January starts with a UV Index of 10, categorized as very high, where a burn can occur in just 15 minutes. However, the intensity escalates dramatically from February to April, with the UV Index reaching a maximum of 15 in March, classified as extreme, necessitating vigilance as burn times shrink to just 10 minutes. This high-risk period continues through May, June, July, and into August, with similar UV levels persisting and caution advisable. As the year progresses into the fall, the UV Index remains elevated, particularly in September and October, yet begins to taper off by November and December with a return to very high levels but longer burn times of 15 minutes again. Visitors and residents are advised to take necessary precautions—such as wearing sunscreen, protective clothing, and seeking shade—especially during the peak months from February to October when UV exposure poses a greater risk.
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 |
| Co GJo | 10 | 13 | 15 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |