Last updated: June 2, 2025
In Cheonan, South Korea, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. With the region's Dwa climate, characterized by distinct seasons, UV exposure can significantly vary throughout the year. Understanding daily UV levels can help residents and visitors alike to safeguard their skin from harmful radiation, especially during peak hours when the index often soars to an alarming 11 around midday. With such intensity, taking precautionary measures is not just advisable; it's essential for enjoying the sun safely and promoting overall skin health.
The UV Index throughout the day presents a dynamic profile, peaking at 11 between 12:00 PM and 1:00 PM, indicating a high risk of harm from unprotected sun exposure. Morning hours start off mild, with values of 1 at 7:00 AM, gradually climbing to 5 by 9:00 AM. As the sun rises higher, the index hits 10 at 11:00 AM, before maxing out at 11. The afternoon sees a slight decline, dipping to 9 at 2:00 PM and continuing to fall, settling at 3 by 5:00 PM. As the day winds down, UV levels drop, returning to 1 by 6:00 PM, reminding us to seek shade and stay protected during those peak midday hours. 🌞
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index displays significant seasonal variations, indicating the need for heightened awareness during certain months. The high-risk months, particularly from April to August, show UV Index levels of 9 to 11, categorized as very high to extreme, with notably short burn times of just 10-15 minutes. In contrast, the winter months of January, February, November, and December have moderate levels, with burn times extending to 30 minutes. To protect skin health, visitors and residents should take precautionary measures during peak UV periods, including seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen whenever UV Index levels reach 6 or higher. By staying informed and prepared, individuals can enjoy outdoor activities safely throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Incheon UVI | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 9 | 6 | 4 | 3 |
| Seoul UVI | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 9 | 6 | 4 | 3 |
| Cheonan | 3 | 4 | 6 | 9 | 9 | 11 | 11 | 11 | 9 | 7 | 4 | 3 |
| Daejeon UVI | 3 | 5 | 7 | 9 | 9 | 11 | 11 | 12 | 10 | 7 | 5 | 3 |
| Daegu UVI | 3 | 5 | 7 | 10 | 10 | 11 | 12 | 12 | 10 | 7 | 5 | 3 |
| Busan UVI | 4 | 5 | 7 | 10 | 10 | 11 | 12 | 12 | 10 | 7 | 5 | 3 |