Last updated: June 2, 2025
In Esfarayen, Iran, staying informed about the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding the daily fluctuations in UV levels helps residents and visitors alike take proactive measures against sunburn and long-term skin damage. With a Csa climate, characterized by hot summers and mild winters, Esfarayen experiences heightened UV exposure, especially during peak hours—where the index reaches a maximum of 12 around noon. Being aware of these levels allows you to plan your outdoor activities wisely and enjoy the beautiful sun safely.
Starting from early morning, the UV Index begins its ascent, peaking dramatically at 12 around noon. From 07:00, when it starts at a mild 2, it climbs steadily, reaching 4 by 08:00 and hitting 7 by 09:00. The intensity of UV radiation escalates significantly, reaching 9 at 10:00 and soaring to its zenith of 11 by 11:00. The sun’s rays are most potent at 12:00, with the index peaking at 12—a reminder to prioritize sun protection. As the afternoon progresses, the index gradually declines, dropping to 9 at 14:00, then to 7 by 15:00, and continuing its descent to 4 at 16:00. Finally, the evening brings relief as the UV Index falls to 2 at 17:00, and by sunset, it settles at a mere 1 by 18:00 and 19:00. This daily UV cycle highlights the importance of sun safety, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | 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 notable fluctuations, marking significant changes in sun exposure risk levels. The high-risk months are primarily from March to August, where the UV Index peaks at 12, categorized as extreme, indicating a burn time as short as 10 minutes. In contrast, months like January, November, and December fall into the moderate category with UV Index values around 3 to 4, allowing for longer exposure without immediate harm. Residents and visitors are advised to exercise caution during the high-risk months, particularly by seeking shade and wearing protective clothing and sunscreen during peak sunlight hours to mitigate the risk of sunburn and long-term 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 |
| Esfarayen | 4 | 5 | 8 | 10 | 12 | 12 | 12 | 11 | 10 | 7 | 4 | 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 |