Last updated: August 1, 2025
In Tsul-Ulaan, Mongolia, staying informed about the UV Index is essential for safeguarding your skin health. With the sun's rays becoming increasingly intense during the peak hours, understanding UV levels can help prevent painful sunburns and long-term skin damage. Typically experiencing a Dwc climate, Tsul-Ulaan sees significant UV exposure, especially between 10 AM and 2 PM, when the UV Index can soar to 9. Being aware of these levels not only enhances your outdoor experience but also promotes safety and well-being amid the beautiful yet harsh Mongolian sun.
The UV Index throughout the day tells a compelling story of sun exposure. Starting at a gentle 1 at 7:00 AM, it gradually rises, reaching 2 by 8:00 AM. As the clock ticks towards mid-morning, the intensity ramps up, peaking at 9 between 12:00 PM and 2:00 PM—the perfect time for a shaded respite or sunscreen application. By 11:00 AM, the index hits 7, signaling more significant sun intensity. As the afternoon wanes, it starts to dip, falling to 3 by 5:00 PM, and eventually returning to 1 by 7:00 PM. This data emphasizes the importance of sun protection, particularly during those peak hours, to ensure a safe and enjoyable day outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal fluctuations that require careful attention from both residents and visitors. From January to February, the risk remains low to moderate, with burn times ranging from 30 to 45 minutes. However, as spring arrives and peaks in April with a high UV Index of 7, the risk escalates, necessitating more diligent sun protection. The summer months of May to August are particularly concerning, featuring a sustained very high index of 9 and a minimized burn time of only 15 minutes—the highest risk period. As September approaches, the index drops to 7, but caution should still be exercised. The UV levels fall again in October, settling to a moderate 4, and remain low through November and December. To ensure safety, especially during high-risk months (May through August), it is crucial to apply sunscreen, seek shade, and wear protective clothing.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Darhan UVI | 1 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Erdenet UVI | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Ulan Bator UVI | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 6 | 4 | 3 | 1 |
| Tsul-Ulaan | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 7 | 4 | 2 | 2 |
| OElgii UVI | 2 | 3 | 5 | 7 | 10 | 9 | 9 | 9 | 7 | 5 | 2 | 1 |
| Khovd UVI | 2 | 3 | 6 | 7 | 10 | 10 | 9 | 9 | 7 | 5 | 2 | 1 |