Last updated: July 2, 2025
In Khomeyn, Iran, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you prevent sunburn and reduce the risk of long-term skin damage, such as aging and skin cancers. With Khomeyn's Csa climate, characterized by hot summers and moderate seasons, UV exposure can be particularly intense, especially during peak hours when the index reaches highs of 12 around midday. Navigating your outdoor activities with knowledge of the UV Index empowers you to enjoy the sun safely while taking proactive steps to safeguard your skin health.
The UV Index throughout the day showcases a dynamic rise and fall in sunlight intensity. Early morning hours start off mild, with a maximum of 1 at 7:00 AM, gradually ramping up to a moderate 3 by 8:00 AM. By 9:00 AM, the index reaches 5, signaling the need for sun protection as it peaks at 12 from 12:00 PM to 1:00 PM, indicating very high UV radiation. After this intense midday burst, the values gradually decline into the afternoon, heading towards a 6 at 4:00 PM, before dropping back to 1 by 6:00 PM. It's crucial to stay vigilant during the midday hours when the sun’s rays are most potent!
| 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 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with high-risk months typically spanning from March to September. Peak levels occur in May with a UV Index of 14, marking it as the most critical month for sun exposure, categorized as extreme with a burn time of just 10 minutes. April also registers an alarming UV Index of 11, while the summer months of June, July, and August maintain similar extreme levels. Residents and visitors should take precautions during these peak times by wearing sunscreen, protective clothing, and seeking shade. January, February, November, and December see relatively lower UV levels, with the safest months being November and December, when the burn time can extend to 25-30 minutes. Awareness and proper sun protection are essential throughout the year, especially during the high-risk months.
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 |
| Khomeyn | 6 | 7 | 10 | 11 | 14 | 13 | 12 | 12 | 11 | 8 | 6 | 4 |