Last updated: May 3, 2025
In Posto da Mata, Brazil, being aware of the UV Index is not just a health tip; it's a crucial part of daily life. Understanding UV levels helps residents and visitors alike to take proactive measures against sunburn, skin damage, and long-term health issues related to UV exposure. With a tropical climate that frequently features high UV levels—peaking at a significant 9 during midday—Posto da Mata presents unique risks that require vigilance. By staying informed about the UV Index, you can protect your skin while enjoying the vibrant outdoor lifestyle that this beautiful region has to offer.
The UV Index throughout the day showcases a distinctive pattern, peaking dramatically as the sun ascends. From 7:00 AM to 8:00 AM, the index starts at a low 1, gradually climbing to a moderate 3. By 9:00 AM, the intensity rises to 5, but the real surge occurs between 10:00 AM and 12:00 PM, where it reaches a maximum of 9, indicating a high risk for sun exposure. As afternoon approaches, the UV Index begins to taper off, dropping to 5 by 2:00 PM, and further declining to 3 at 3:00 PM. The day winds down with 1 at 4:00 PM and dwindling to 0 by 6:00 PM. To ensure safety during peak hours, it's crucial to take precautions from 10:00 AM to 12:00 PM, when UV radiation is at its strongest.
| 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 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | 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, the UV Index exhibits significant fluctuations, with the highest levels recorded during the winter months. January, February, and November stand out as high-risk months, each reaching a peak UV Index of 15, categorized as extreme, with a dangerously short burn time of just 10 minutes. Following closely, March and April also fall into the extreme category—albeit slightly lower, at 13 and 12 respectively. Visitors and residents should remain vigilant, especially from September to October, where the UV Index spikes again, reaching levels of 12 and 14. For safety, it's crucial to limit sun exposure and employ protective measures such as wearing sunscreen, hats, and sunglasses during these high-risk months, particularly during midday when the sun's rays are at their strongest. Overall, maintaining awareness of UV levels is essential for skin protection throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rio de Janeiro UVI | 15 | 14 | 13 | 10 | 7 | 6 | 7 | 9 | 11 | 12 | 13 | 15 |
| Sao Paulo UVI | 16 | 15 | 12 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 15 |
| Posto da Mata | 15 | 15 | 13 | 12 | 9 | 8 | 8 | 10 | 12 | 14 | 15 | 15 |
| Belo Horizonte UVI | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| Salvador UVI | 14 | 14 | 14 | 13 | 10 | 9 | 9 | 12 | 12 | 15 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |