Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Manato, Madagascar, where the climate is characterized by warm, sunny days typical of a Cfa climate zone. With UV levels peaking at 7 between 11:00 AM and 12:00 PM, being aware of these readings is essential for preventing sunburn and promoting overall skin health. Knowledge of UV exposure risks can help individuals take necessary precautions to enjoy the beautiful sun while safeguarding their skin from damage. Stay informed and protect yourself with timely awareness of the UV Index!
The UV Index data paints a clear picture of how exposure to ultraviolet rays varies throughout the day. Starting at a low level of 1 at 07:00, the index gradually climbs to peak at 7 from 11:00 to 12:00, indicating the times when sun protection is most crucial. As the afternoon progresses, the index dips to 6 at 13:00, then gently declines to 4 by 14:00. The evening hours see a significant drop, with values falling to 2 at 15:00 and retreating to 1 at 16:00. By nightfall, the UV Index drops to 0 from 18:00 onward, signalling a safe time for outdoor activities without the need for sun protection. Enjoy the sunshine, but be mindful of the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 2 | low | 45 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant fluctuations throughout the year, peaking during the winter months. From January to April, the UV Index remains in the extreme category, with a consistent index of 16-14 and a burn time of just 10 minutes. May marks a transition to very high exposure, decreasing slightly to 8, while June and July see a drop to high levels (UV Index 6-7) with burn times extending to 25 minutes. In August, the UV Index returns to very high (UV 9) before rising back to extreme levels in September to November, fluctuating between 11-14. With these trends, January through April and September through November are notably high-risk months. Residents and visitors should take precautions during these periods, including wearing appropriate protection such as sunscreen, hats, and sunglasses, and seeking shade to minimize UV exposure—especially during the peak burn times.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manato | 16 | 16 | 14 | 11 | 8 | 6 | 7 | 9 | 11 | 12 | 13 | 14 |
| Toamasina UVI | 16 | 16 | 15 | 12 | 9 | 7 | 8 | 10 | 12 | 12 | 13 | 15 |
| Fianarantsoa UVI | 17 | 17 | 15 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| Mahajanga UVI | 16 | 16 | 15 | 13 | 10 | 8 | 9 | 11 | 12 | 12 | 13 | 15 |
| Antananarivo UVI | 17 | 17 | 15 | 12 | 10 | 8 | 9 | 11 | 13 | 13 | 14 | 16 |
| Antsirabe UVI | 17 | 17 | 16 | 13 | 10 | 8 | 9 | 11 | 13 | 13 | 14 | 16 |