Last updated: August 1, 2025
Being aware of the UV Index is crucial for residents and visitors of Tsagaanhayrhan, Mongolia, as it directly impacts sun exposure and skin health. Understanding UV levels can help prevent sunburn and long-term skin damage, promoting a healthier outdoor lifestyle while enjoying the region's stunning landscapes. Tsagaanhayrhan experiences a Dwc climate, characterized by significant seasonal variations, and typically faces increased UV risks, especially during the peak midday hours when the index reaches its highest points of 8 to 9. Stay informed and protect your skin by checking the UV Index regularly!
As the sun rises, the UV Index begins its ascent, reaching a gentle 1 at 07:00. By 08:00, it doubles to 2, slowly warming up for the day ahead. Things heat up significantly by 09:00, hitting 4, and by 10:00, it climbs to a peak of 6. The zenith arrives at 12:00, where the index stands tall at 8, and by 13:00, it reaches a sizzling 9—the highest point of the day. As the afternoon wears on, the UV intensity begins to wane, dropping to 8 at 14:00 and then to 6 at 15:00. By 16:00, it cools further to 5, retreating to 3 by 17:00. The evening brings relief as the UV Index transitions back down to 2 at 18:00 and finally returns to a mild 1 by 19:00. This hourly journey highlights the importance of sun safety, especially during those midday hours when the UV rays are at their fiercest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the highest risk months being May through August when the UV Index reaches very high levels of 9, necessitating a burn time of just 15 minutes. The UV Index peaks in these summer months, making it crucial for visitors and residents to take precautions against sun exposure. In contrast, January and November present the lowest risk with an Index of 2 and a burn time of 45 minutes. It is advisable to wear protective clothing, seek shade, and apply sunscreen during high-risk months, especially from March to August, when the Index reaches high to very high levels. As the seasons change, understanding these UV variations can help individuals protect themselves effectively from harmful sun effects.
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 |
| Tsagaanhayrhan | 2 | 3 | 6 | 7 | 9 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Ulan Bator UVI | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 6 | 4 | 3 | 1 |
| 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 |