Last updated: June 2, 2025
Understanding the UV Index in Bayanhoshuu, Mongolia is essential for ensuring your skin's health and preventing sunburn, especially in this region characterized by its Dwc climate, which can elevate UV exposure during long summer days. With UV levels peaking at 10 around midday, being aware of these fluctuations helps residents and visitors alike to plan outdoor activities safely. Knowing the local UV index enables you to take necessary precautions, reducing the risk of skin damage while enjoying the beautiful landscapes of Bayanhoshuu. Stay informed, stay protected!
As the day unfolds, sunshine seekers can expect a steady rise in the UV Index, peaking in the early afternoon. Starting with a gentle 1 at 7:00 AM, the index escalates to a 2 by 8:00 AM. The real intensity kicks in around 10:00 AM, reaching 6, and continues its climb, hitting 8 at 11:00 AM, soaring to a maximum of 10 from 1:00 PM to 2:00 PM. After this zenith, the UV Index gradually declines, falling to 7 by 4:00 PM and then tapering off to 1 by 7:00 PM. Remember, during those peak hours, protect your skin to enjoy the sun safely!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
As the season progresses, the UV Index shows significant variation, impacting exposure risk for visitors and residents. January and December feature low UV levels (Index 2), allowing for safer sun exposure with burn times of 45 minutes. However, danger begins to rise in February (Index 3) and reaches a peak in May, where the UV Index soars to 11, marking the extreme category and reducing safe exposure time to just 10 minutes. The high-risk months, from April to August, require heightened awareness, with indices ranging from 9 to 11, indicating very high to extreme exposure. Visitors and residents are advised to take protective measures, such as wearing sunscreen, protective clothing, and hats, especially during these months, to ensure their safety under the sun. September through November see a tapering off of UV intensity, but precautions remain wise due to moderate indices.
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 |
| 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 |
| Bayanhoshuu | 2 | 3 | 6 | 9 | 11 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |