Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Tlemcen, Algeria, especially during the sun-soaked summer months. The UV levels can reach perilous heights during midday, peaking at 12 around noon, making it essential to stay informed to prevent sunburn and protect skin health. With Tlemcen's Mediterranean climate characterized by hot summers and moderate winters, the risk of overexposure to harmful ultraviolet rays increases significantly. By being aware of the UV Index, you can take proactive steps to safeguard your skin and enjoy the beautiful outdoor settings this historical city has to offer.
Throughout the day, the UV Index displayed a dynamic pattern, peaking at an intense 12 around 1 PM. Starting off gently at 1 by 7 AM, it climbed steadily, reaching 9 by 11 AM, a clear sign to take precautions. As the sun approached its zenith, the index swelled to its maximum at 12 PM, emphasizing the importance of sun safety. Following the midday peak, the index gradually decreased, dropping to 9 by 3 PM, then tapering off further to 2 by 6 PM and 1 by 7 PM. This data underscores the significance of shielding oneself from the sun's harmful rays during the day, especially when the UV Index is at its highest.
| 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 | 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 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal changes, peaking during the summer months. From January to February, UV levels are moderate, with a burn time of 30 minutes. As spring arrives in March, the UV Index elevates to 8 (very high), reducing burn time to 15 minutes, and it continues to climb, reaching a peak of 12 in June (extreme), where the burn time shortens to just 10 minutes. The danger remains high in July and August, with UV levels at 11 and 10, respectively. September sees a slight drop, but still advises caution with a UV Index of 8. As fall approaches in October, levels decrease to 7 (high), permitting a burn time of 25 minutes, before returning to moderate levels in the winter months of November and December. Residents and visitors should remain vigilant from March through August, as these are the high-risk months for UV exposure, and it is recommended to use sunscreen, wear protective clothing, and seek shade during peak sun hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Algiers UVI | 3 | 5 | 7 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Boumerdas UVI | 3 | 5 | 7 | 8 | 10 | 11 | 11 | 9 | 8 | 6 | 4 | 3 |
| Constantine UVI | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 8 | 7 | 5 | 3 |
| Oran UVI | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 8 | 7 | 5 | 3 |
| Tlemcen | 3 | 5 | 8 | 9 | 10 | 12 | 11 | 10 | 8 | 7 | 5 | 3 |
| Tebessa UVI | 4 | 5 | 8 | 9 | 10 | 12 | 11 | 10 | 9 | 7 | 5 | 4 |