Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors of Erriadh, Tunisia, where the sun's rays can be particularly intense. Understanding UV levels is essential not only for preventing sunburns but also for maintaining long-term skin health. With Erriadh's BSh climate characterized by hot and dry conditions, locals face heightened risks of UV exposure, especially during peak hours, when the UV Index can soar to 11 around noon. Stay informed and take necessary precautions to protect your skin while enjoying the beautiful Tunisian sunshine.
The UV Index throughout the day showcases a remarkable rise, peaking impressively at 11 between noon and 1 PM. Starting with a modest 1 at 7 AM, the index escalates to around 3 by 8 AM and rapidly climbs, hitting 5 by 9 AM. The ascent continues as the sun reaches its zenith, soaring to 8 at 10 AM and breaching the 10 mark by 11 AM. As we reach peak sun hours, it stabilizes at 11 for both 12 PM and 1 PM, before gradually descending to 9 at 2 PM and tapering off to 7 by 3 PM. The latter part of the afternoon sees a gentle decline to 4 at 4 PM, finally returning to the morning's low of 1 by 6 PM, and maintaining this relaxed level through 7 PM. It's a vivid reminder of the sun's strength, urging outdoor enthusiasts to stay sun-smart during the intense midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | 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, UV index levels exhibit notable seasonal changes, peaking during the summer months. January and December see moderate UV levels (4), allowing for longer burn times of 30 minutes. As the year progresses, February to April experience a rise in UV intensity, with March marking the transition to high risk (7) and April escalating to very high (9). The late spring and summer months of May through July present the highest risk, reaching an extreme UV index of 11, where burn times drop to as little as 10 minutes. August to October maintain high to very high levels, encouraging vigilance as burn times remain short. Residents and visitors are urged to take protective measures, especially during April to July, by applying sunscreen, wearing protective clothing, and seeking shade during peak sun hours to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bizerte UVI | 3 | 5 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 7 | 4 | 3 |
| Tunis UVI | 3 | 5 | 6 | 8 | 9 | 11 | 10 | 10 | 8 | 7 | 4 | 3 |
| Sousse UVI | 3 | 5 | 7 | 8 | 9 | 11 | 11 | 10 | 8 | 7 | 4 | 3 |
| Sfax UVI | 4 | 5 | 7 | 8 | 10 | 11 | 11 | 10 | 8 | 7 | 5 | 3 |
| Kairouan UVI | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 7 | 5 | 3 |
| Erriadh | 4 | 6 | 7 | 9 | 10 | 11 | 11 | 10 | 8 | 7 | 5 | 4 |