Last updated: June 2, 2025
Awareness of the UV Index is crucial for residents and visitors in M'Tsangamouji, Mayotte—a tropical paradise where the sun shines brightly and temperatures rise. Understanding UV levels can significantly impact your skin health and help prevent painful sunburns, especially during peak hours when the index reaches a high of 9 between noon and 1 PM. With the Aw climate zone, M'Tsangamouji experiences intense sunlight, making it essential to stay informed about UV exposure risks throughout the day. By keeping an eye on the UV Index, you can enjoy the outdoors while protecting your skin from harmful rays.
The UV index throughout the day exhibits a dynamic rise and fall, reflecting the sun's intensity. At 07:00, the index starts low at 1, gradually climbing to 2 by 08:00. By 09:00, it reaches a moderate 4, but excitement peaks at 12:00 with a striking 9, indicating a high risk for unprotected skin. The intensity tapers down after this noon pinnacle—falling to 8 at 13:00, then 6 at 14:00. As afternoon turns to evening, the index diminishes significantly, settling at 4 by 15:00, dropping to 2 at 16:00, and finally winding down to 1 by 17:00. As the sun sets, the index recedes completely, hitting 0 by 18:00, leaving a tranquil end to the day. Remember, during peak times, sun protection is crucial!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal changes, with the highest readings occurring from January to April where the index remains at 16 to 13, signifying an extreme exposure category with a burn time of just 10 minutes. Following this period, the UV Index slightly decreases in June and July to 9 and 10, indicating a very high exposure category with a longer burn time of 15 minutes. As summer transitions to fall, August sees a rise back to 12, followed by consistent extreme levels of 13 from September to November. The high-risk months consistently fall between January and April, with August also posing a notable risk. Visitors and residents are advised to take precautions year-round by applying sunscreen, wearing protective clothing, and limiting sun exposure during peak hours to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M'Tsangamouji | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |
| Sada UVI | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |
| Dembeni UVI | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |
| Dzaoudzi UVI | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |
| Koungou UVI | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |
| Mamoudzou UVI | 16 | 16 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 13 | 13 | 15 |