Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Alto Araguaia, Brazil, where the sun can be both a source of warmth and a potential hazard. With UV levels peaking at 10 during midday hours, being aware of these UV exposure risks is essential for preventing sunburn and maintaining overall skin health. The region's tropical savanna climate (Aw) means that sunny days are frequent, underscoring the need to monitor UV levels closely. Stay informed and protect yourself from harmful rays while enjoying the beautiful Brazilian sun!
As the sun rises, the UV Index begins to climb, starting at a gentle 1 at 07:00. By 08:00, it escalates to a moderate 3, but the real intensity hits by 10:00, peaking at a striking 10 from 11:00 to 12:00—a clear signal for sun safety awareness. As the afternoon progresses, the index gradually declines, dipping to 8 at 13:00 and then swiftly dropping to 5 by 14:00. The evening brings relief, with levels decreasing to 3 at 15:00, and falling to 1 by 16:00. As the day fades away, the UV risk diminishes further, reaching 0 by 19:00. Remember to protect your skin during those peak hours!
| 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 | 10 | very high | 15 min |
| 12:00 | 10 | 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 |
The UV Index experiences extreme levels during the first half of the year, peaking at 17 in February and remaining high through March and April. As the summer approaches, the UV Index decreases slightly, with very high levels recorded in May through July, and then returning to extreme levels in August and September. The high-risk months for UV exposure are therefore from January to April and again from August to November, where burn times can be as low as 10 minutes. Residents and visitors are advised to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours, especially in these critical months. Proper awareness and safety measures can help mitigate the risks associated with high UV exposure.
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 |
| 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 |
| Alto Araguaia | 16 | 17 | 14 | 12 | 10 | 8 | 9 | 11 | 12 | 15 | 16 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |