Last updated: June 2, 2025
Understanding the UV Index in Sedeyen-e Yek, Iran is essential for safeguarding your skin and overall health. With a climate classified as BSh, the region experiences high UV exposure, especially during the peak hours of 11:00 AM to 1:00 PM, where the index escalates to dangerous levels of 11. Recognizing these UV levels helps you take proactive measures against sunburn and long-term skin damage. Be aware: daily fluctuations in UV intensity can significantly influence your sun safety practices, making UV Index awareness a key part of enjoying the beautiful sunshine of Sedeyen-e Yek while protecting your skin.
Throughout the day, the UV Index experiences a dramatic increase, peaking at 11 between noon and 1 PM, indicating a very high level of solar radiation. Early risers will notice a gentle start, with a UV Index of just 1 at 7 AM, gradually climbing to 4 by 9 AM. As the sun reaches its zenith, values soar to 9 at 11 AM, signaling it's time to take precautions. After the peak, the UV Index begins to decline, dropping to 10 at 2 PM, then tapering off to 3 by 5 PM and resting back down to 1 by 6 PM. Staying protected in the midday sun is crucial for skin safety during these hours!
| 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 | 9 | 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 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits notable seasonal changes, peaking in the late spring and early summer months. From January (UV Index 5, moderate risk) to February (UV Index 6, high risk), the UV levels steadily increase. A significant rise occurs in March and April (both at UV Index 9, very high risk), leading to May and June, which boast an extreme UV Index of 11. The highest risk months are May and June, where the burn time is only 10 minutes. Although July and August see a slight decrease in index values (UV Index 10 and 9, respectively), the risk remains very high. As autumn approaches, UV levels gradually decline, with October seeing a UV Index of 7 (high risk), before returning to more moderate levels in November (5) and December (4). Visitors and residents are advised to take precautions, especially during the high-risk months of March through October. Wearing sunscreen, protective clothing, and seeking shade during peak sun hours can help minimize the harmful effects of UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| sedeyen-e Yek | 5 | 6 | 9 | 9 | 11 | 11 | 10 | 9 | 9 | 7 | 5 | 4 |
| 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 |