Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Dien Chau, Vietnam, as it provides essential information about the sun’s ultraviolet (UV) radiation levels throughout the day. With the tropical climate typical of Dien Chau, the risks of sunburn and long-term skin damage increase significantly, especially during peak UV hours when indices can soar to a hazardous 14 around noon. By staying informed about UV levels, you can effectively protect your skin and maintain your health while enjoying the beautiful outdoors that this region has to offer. Embrace safe sun practices and make informed decisions to enjoy your time under the Vietnamese sun!
The UV Index throughout the day paints a clear picture of sun intensity, peaking dramatically between 11:00 AM and 12:00 PM, where it reaches a scorching 14. Early morning starts off mild with a maximum of 2 at 7:00 AM, gradually escalating to a more cautious 4 at 8:00 AM, before the sun strikes hard at 10 around 10:00 AM. By 9:00 AM, the UV climbs to 7, signaling the importance of sun protection as it escalates further to its zenith. In the afternoon, values begin to descend, dropping to 10 at 2:00 PM, and decreasing steadily to 1 by 5:00 PM, indicating a return to safer conditions as the sun sets. With no UV exposure risks by 7:00 PM, this data underscores the critical times for sunscreen application and shade seeking to prevent harm. Stay safe and savvy under the sun!
| 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 | 12 | extreme | 10 min |
| 14:00 | 10 | 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 |
The UV Index demonstrates significant seasonal fluctuations, with the highest risks occurring during the summer months. From March through October, the UV Index rises to extreme levels, peaking at 14 in July, August, and September, where a mere 10 minutes of unprotected exposure can lead to skin damage. Conversely, January and February also present high risks with UV Index values of 8 and 10 respectively, while November reverts to very high at 9. Residents and visitors should take precautions, especially from March to October, by seeking shade, wearing protective clothing, and applying sunscreen to safeguard against harmful UV rays. During the winter months, although the risks decrease, it remains essential to remain vigilant, particularly in January and February.
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 |
| Dien Chau | 8 | 10 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 12 | 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 |