Last updated: July 2, 2025
Understanding the UV Index in Birjand, Iran, is crucial for protecting your skin and overall health. With humidity and temperatures characteristic of the BSk climate zone, the sun can be intense, especially between the hours of 10 AM and 2 PM when UV levels peak. By monitoring the UV Index, you can take necessary precautions to prevent sunburn and long-term skin damage. Whether you're enjoying the outdoors or going about your daily routine, being aware of UV levels can make all the difference in ensuring a safe and enjoyable experience under the sun.
At dawn, the UV Index begins its ascent, starting at a modest 2 at 07:00. As the morning progresses, the index rises sharply, peaking at a striking 13 by 12:00—a clear indication that the sun is at its strongest. The hottest hour comes at 11:00, with a maximum of 12, before it slightly dips to 10 at 14:00. As the afternoon wanes, the index decreases, dropping to 7 by 15:00, and further declining to 1 by 19:00. This data highlights the importance of sun protection during peak hours, particularly between 10:00 and 14:00, when the risk of UV exposure is highest. Stay safe and enjoy the sun wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The seasonal UV changes reveal a notable increase in UV Index values from January to August, peaking at 13 during the summer months of May through July, categorized as extreme. March marks the transition to very high UV levels, while September begins a gradual decline back to lower levels. High-risk months include March to September, where residents and visitors are exposed to significant UV radiation and should be particularly vigilant. During these months, it is advised to seek shade, wear sun protection such as sunscreen and protective clothing, and limit outdoor activities during peak sunlight hours. The burn time drastically decreases during this peak period, with just 10 minutes of unprotected exposure potentially leading to skin damage. In contrast, the winter months of January and December present moderate exposure, with burn times extending to 30 minutes, indicating a lower immediate risk but still warranting some sun protection.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karaj UVI | 4 | 5 | 8 | 9 | 12 | 12 | 11 | 10 | 10 | 7 | 4 | 3 |
| Mashhad UVI | 4 | 5 | 8 | 10 | 12 | 12 | 12 | 11 | 10 | 7 | 4 | 3 |
| Tehran UVI | 4 | 6 | 8 | 9 | 13 | 12 | 11 | 10 | 10 | 7 | 5 | 3 |
| Tabriz UVI | 4 | 5 | 9 | 10 | 12 | 12 | 12 | 11 | 9 | 7 | 4 | 3 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |
| Birjand | 5 | 7 | 10 | 11 | 13 | 13 | 13 | 12 | 11 | 9 | 6 | 4 |