Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Vavatenina, Madagascar, where sun exposure can be intense. With UV levels peaking between 10:00 AM and 1:00 PM—reaching as high as 9—awareness of these fluctuations is key to preventing sunburn and protecting skin health. Given the tropical climate of Vavatenina, individuals face significant UV exposure risks, especially during the hotter months. By staying informed about the UV Index, you can enjoy the outdoors safely while minimizing the harmful effects of sun exposure.
As the day unfolds, the UV Index experiences a notable rise, peaking at 9 during the noon hour. Starting from a gentle 1 at 7:00 AM, it escalates steadily, reaching 7 by 10:00 AM and 8 by 11:00 AM. The intensity continues to surge, hitting its zenith of 9 at 12:00 PM, before gradually tapering off in the afternoon. By 3:00 PM, it dips to 3, and as the sun begins to set, the index drops to a low 0 by 7:00 PM, signifying a swift decline in UV radiation. This pattern underscores the importance of sun safety during the peak hours of 10:00 AM to 2:00 PM, when UV exposure is at its highest. Stay protected and enjoy the sun wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 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 |
Throughout the year, seasonal UV changes reveal significant fluctuations in the UV Index, with the highest levels occurring during the winter and early spring months of January to March, where the index peaks at 17 and is categorized as extreme. As the year progresses, values decrease slightly but remain high, particularly in April (12) and May (10), before dropping to very high levels from June to August. High-risk months for UV exposure are notably concentrated between January and April, as well as in August and September; each of these months features an extreme UV index with a burn time of just 10 minutes. Visitors and residents are strongly advised to take necessary precautions during these months, including wearing sunscreen, protective clothing, and seeking shade when outdoors, particularly between 10 a.m. and 4 p.m., to minimize the risk of harmful UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Vavatenina | 17 | 17 | 15 | 12 | 10 | 8 | 9 | 11 | 12 | 12 | 13 | 15 |
| 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 |