Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Javarthushuu, Mongolia. With its Dwc climate that features cold winters and warm summers, awareness of UV levels becomes essential for preventing sunburn and protecting skin health. The UV Index peaks between 12 PM and 1 PM, reaching levels as high as 9, indicating a significant risk for harm from unprotected sun exposure. By staying informed about local UV conditions, you can enjoy the outdoors while safeguarding your skin against the harmful effects of ultraviolet radiation.
The UV Index for the day shows a notable increase in intensity as the sun rises. Starting at a low 2 at 07:00, it climbs steadily, reaching 3 by 08:00. The peak occurs around 12:00, where it hits a high of 9, signaling the most hazardous exposure time. Followed closely by 8 at 11:00, 13:00, and 14:00, the UV levels begin to taper off after that, dropping to 6 by 15:00. A further decline occurs throughout the afternoon and evening, finishing the day at a minimal 1 by 18:00 and 19:00. For safety, it’s essential to keep skin protection in mind during the midday hours when the UV Index is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | 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 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 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 radiation levels experience significant seasonal changes that visitors and residents should be aware of. January and December offer the lowest UV Index values of 1, indicating a low exposure risk with a burn time of 45 minutes. As we move into February and March, the UV Index rises to 3 and 4, respectively, requiring moderate protection. The UV Index peaks during the summer months of April through August, hitting a high of 9 in June, classifying it as a very high exposure risk where burn time drops to just 15 minutes. The high-risk months are clearly April to August, where enhanced sun protection measures such as sunscreen, hats, and protective clothing are crucial. As the year winds down, UV levels decrease again, falling to moderate and low categories by October through December. Residents and visitors are advised to adjust their sun safety practices accordingly, especially during the summer months when UV exposure is most intense.
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 |
| Javarthushuu | 1 | 3 | 4 | 7 | 8 | 9 | 8 | 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 |