Last updated: July 2, 2025
In Deyr, Iran, being aware of the UV Index is crucial for protecting your skin and maintaining overall health. Understanding UV levels helps residents and visitors alike prevent sunburns and long-term skin damage, particularly under the intense sun exposure common in this BWh climate. With midday UV Index values soaring up to 11, the risk of harmful effects increases significantly. By staying informed about the daily UV fluctuations, you can take proactive steps to enjoy the beautiful sunny days in Deyr while safeguarding your skin's health.
The UV Index throughout the day reveals a fascinating journey of intensity. Starting off mellow at 07:00 with a UV Index of 1, the day gradually warms up as the sun climbs higher, reaching a peak of 11 by 12:00 and 13:00. This is the critical period where protection from the sun becomes essential, as the UV rays are at their strongest. Following this zenith, the index begins to decline, dropping to 10 at 14:00, then gradually tapering off to 7 by 15:00. As the afternoon fades, it cools down again to 4 at 16:00 and settles back to a gentle 2 by 17:00. By 18:00, it’s a mere 1, marking the close of a day that highlighted the sun's powerful rays. Always remember, during those peak hours, a little extra sun protection goes a long way!
| 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 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | 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 |
Throughout the year, the UV Index shows significant seasonal variations, indicating the need for careful sun protection during high-risk months. From March to August, the index peaks, with values reaching as high as 11 during May through July, categorized as extreme, where the burn time can be as short as 10 minutes. February and November also present higher risks, with indexes of 7 and 6, respectively. Visitors and residents should stay vigilant, particularly from March to August, when sun exposure can lead to serious skin damage in mere minutes. It is advisable to wear protective clothing, seek shade, and apply sunscreen diligently during these peak months. As the UV Index decreases in January, October, and December, the risk for skin damage lessens, but those months still require moderate sun safety measures with burn times of 30 minutes.
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 |
| Deyr | 5 | 7 | 10 | 10 | 11 | 11 | 11 | 10 | 9 | 8 | 6 | 5 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |