Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Ky Son, Vietnam, where the sun can be particularly intense. With maximum UV levels reaching as high as 13 around midday, awareness of these daily fluctuations is essential for effective sunburn prevention and maintaining overall skin health. The Cwa climate of Ky Son brings a mix of tropical conditions and seasonal variations, making it important to stay vigilant against the risks associated with high UV exposure. By staying informed about the UV Index, you can enjoy the sun safely while protecting your skin from potential harm.
As the sun rises, the UV Index begins its ascent, with a modest 2 at 07:00, reminding us to take it easy in the early hours. By 08:00, it climbs to 3, signaling a slight increase in sun intensity. The real action starts at 09:00, where the index leaps to 6, inviting outdoor enthusiasts to soak up the rays. As we reach the peak at 12:00, the UV Index hits a sizzling 13, highlighting the importance of sun protection. The afternoon sees values gradually decreasing, with 12 at 13:00, tapering down to 9 by 14:00. As the sun dips lower, the index falls to 6 at 15:00 and further to 3 by 16:00. By 17:00, we’re back to a mild 1, and as dusk settles in, the UV Index drops to a 0, signaling it's safe to enjoy the evening without sun concerns. Enjoy your day, but remember to stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | 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, the UV Index exhibits significant seasonal fluctuations, with January and February marking the start of very high UV levels (8 and 10, respectively) and a burn time of just 15 minutes. As we progress into March and April, the index escalates to an extreme level of 12, with a reduced burn time of 10 minutes, highlighting a critical time for sun safety. The peak risk months span from May to October, where the index reaches a sustained high of 13, continuing to warrant just 10 minutes of unprotected exposure before burn occurs. The UV levels begin to decline in November with a UV Index of 9, still classified as very high, before tapering off to a high of 7 in December with a burn time of 25 minutes. To ensure safety, it is essential for visitors and residents to wear protective clothing, apply sunscreen regularly, and seek shade during peak hours, especially from March to October when UV exposure is most intense.
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 |
| Ky Son | 8 | 10 | 12 | 12 | 13 | 13 | 13 | 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 |