Last updated: May 3, 2025
Understanding the UV Index in Riah, Morocco, is crucial for maintaining your skin health and preventing sunburn. As a region in the Mediterranean climate zone (Csa), Riah experiences varying UV levels throughout the day, with peak exposure reaching an intense 11 between 1 PM and 3 PM. Being aware of these UV levels can help you take necessary precautions, such as seeking shade and applying sunscreen, to protect yourself from harmful ultraviolet rays. Don’t underestimate the sun—stay informed and enjoy the beautiful weather safely!
At dawn, the UV Index gently rises from a low of 1 at 07:00, signaling a calm start to the day. As the sun climbs higher, it peaks dramatically at 11:00 with a scorching 8, and then soars to an intense 11 by 13:00—the highest point of the day. The intensity remains strong until 14:00, maintaining that level of 11 before tapering off gradually. By late afternoon, the UV Index drops to 9 at 15:00, sliding down further to 4 by 17:00, and finally winding down to a tranquil 1 as twilight descends around 19:00. This data illustrates the importance of sun protection during the peak hours, particularly between 10:00 and 14:00, when UV exposure is at its maximum.
| 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 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV index levels, highlighting significant risks for sun exposure. From March to August, residents and visitors should be particularly vigilant, as months like May and June see extreme UV levels of 11 and 12, resulting in burn times of just 10 minutes. The UV index peaks in April (9) and remains high through July (11), presenting a constant threat during these spring and summer months. Conversely, winter months like January and December reflect a more moderate risk, with UV indexes around 4 and burn times extending to 30 minutes. It is advisable for everyone to take preventive measures, such as wearing sunscreen, protective clothing, and hats during high-risk months, especially during midday hours when UV radiation is the strongest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Casablanca UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 5 | 4 |
| Sale UVI | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 7 | 5 | 4 |
| Rabat UVI | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 7 | 5 | 4 |
| Riah | 4 | 5 | 8 | 9 | 11 | 12 | 11 | 10 | 10 | 7 | 5 | 4 |
| Fes UVI | 4 | 5 | 8 | 10 | 11 | 12 | 11 | 10 | 9 | 7 | 5 | 4 |
| Marrakesh UVI | 4 | 6 | 9 | 10 | 12 | 12 | 11 | 11 | 10 | 8 | 6 | 5 |