Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Shiraz, Iran, where the sunny climate can pose significant risks for skin health. With UV levels peaking at a staggering 14 during midday, awareness of these readings can help prevent sunburn and long-term skin damage. Shiraz experiences a BSk climate, characterized by hot summers and mild winters, which can lead to prolonged sun exposure. By staying informed about the UV Index, you can enjoy all that this beautiful city has to offer while protecting your skin from harmful ultraviolet rays.
As the sun rises, the UV Index starts at a modest 1 at 07:00, barely a concern for early risers. By 08:00, it climbs to 3, signaling the beginning of increased sun exposure. The intensity peaks dramatically, reaching 10 at 10:00 and hitting a scorching 14 by 12:00, making it crucial to seek shade and wear protective gear. This high level remains steady until 13:00, where the index plateaus at 14 before gradually tapering off in the afternoon. As the clock ticks towards 15:00, the index drops to 8, and by 17:00, it falls to 2, returning to safe levels. The evening settles in with the UV Index concluding the day at a cool 1 after 19:00. Stay vigilant during those 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 | 10 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 14 | 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 variations, with the highest levels occurring from March to September. During this peak period, particularly in May and June, the UV Index reaches an extreme level of 14 and 13, respectively, with a burn time of just 10 minutes. February marks the onset of high-risk months, escalating to an extreme classification by March, and sustaining this dangerous threshold through August. Visitors and residents should remain vigilant during these months, adopting necessary precautions such as applying sunscreen, wearing protective clothing, and seeking shade especially during peak sun hours. As the year progresses towards November and December, UV levels decrease, reducing exposure risks. However, it's essential to remember that UV radiation can still be harmful, even in cooler 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 |
| Shiraz | 6 | 8 | 12 | 12 | 14 | 13 | 13 | 12 | 11 | 10 | 7 | 5 |