Last updated: May 3, 2025
In Rehnan, Iran, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you prevent sunburn and long-term skin damage, ensuring that you enjoy the sun's warmth without the risks. With Rehnan's semi-arid BSk climate, UV exposure can be significant, especially during peak hours—where the index soars to a damaging 13 by noon. Stay informed about the UV Index to protect yourself and make the most of your outdoor activities safely!
From the early morning hours, the UV Index steadily rises, beginning at a gentle 1 at 7:00 AM. As the sun climbs higher, it reaches 3 by 8:00 AM before surging to 6 at 9:00 AM. The peak occurs between 11:00 AM and 1:00 PM, with an intense UV Index of 12 at 11:00 AM and a maximum of 13 at both 12:00 PM and 1:00 PM. As the afternoon progresses, the index starts to decline, dropping to 11 at 2:00 PM, then to 8 by 3:00 PM, and further down to 5 at 4:00 PM. Finally, as the sun sets, the risk decreases significantly, ending the day at 1 by 6:00 PM, illustrating a classic curve of sun intensity throughout the day. Remember to take precautions during the peak hours to protect your skin!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal variation, with the highest levels occurring from April to August. During this peak period, specifically in May and June, the UV Index reaches a maximum of 13, categorized as extreme, indicating a burn time of only 10 minutes. Notably high-risk months for UV exposure include March through October, where proactive sun protection is essential. Visitors and residents should be particularly vigilant during these months, seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly to reduce the risk of skin damage. As the UV levels decline in November and December, with indices dropping to a moderate level of 4, caution is still advised during sunny days. Remember, UV exposure can lead to long-term skin damage, so it's crucial to stay informed and protect yourself year-round.
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 |
| Rehnan | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |