Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Gerash, Iran, where the sun can be relentless. With a BWh climate, the region experiences intense sunlight, making awareness of UV levels essential for preventing sunburn and maintaining healthy skin. During peak hours, particularly from 11:00 AM to 1:00 PM, UV levels can soar as high as 13, posing significant risks for overexposure. By staying informed about the UV Index, you can take proactive measures to protect yourself and enjoy the sunny days safely.
The UV Index exposure throughout the day exhibits a striking progression, peaking at 13 around noon. Starting from a gentle 1 at 7 AM, the index gradually escalates, hitting 3 by 8 AM. As the morning unfolds, it climbs to 5 by 9 AM, reaching a significant 9 by 10 AM. The afternoon sun intensifies, culminating in a maximum value of 11 at 11 AM before surging to its zenith at 12 PM. Following the high point, the index gradually declines, dropping to 12 at 1 PM, and tapering off to 10, 7, and finally 4 by mid to late afternoon. As the sun sets, the UV Index diminishes further, resting at 1 by 6 PM and continuing through 7 PM. It’s advisable to take precautions during peak hours, especially between 11 AM and 1 PM, to ensure safety under the sun.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | 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 |
Throughout the year, the UV Index experiences significant seasonal variations, with the highest risk occurring from March to September. During these months, the UV Index reaches extreme levels, peaking at 13 in both May and July, where the recommended burn time is only 10 minutes. In contrast, the UV Index is lower during the winter months, with January recorded at 6 (high exposure) and December at 5 (moderate exposure), allowing for safer outdoor activity for up to 30 minutes. Visitors and residents should take extra precautions during February through September, using sunscreen, wearing protective clothing, and seeking shade during peak hours to minimize the risk of sunburn and skin damage.
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 |
| Gerash | 6 | 8 | 11 | 11 | 13 | 12 | 13 | 12 | 11 | 9 | 7 | 5 |