Last updated: June 2, 2025
Understanding the UV Index is crucial for the residents of Guaratinga, Brazil, where the sun shines bright and the risk of skin damage is a pressing concern. With UV levels peaking between 11 AM and 1 PM, it's vital to comprehend these fluctuations to effectively prevent sunburn and protect overall skin health. Characterized by its tropical savanna climate, Guaratinga experiences intense sunlight that elevates UV exposure risks, making awareness of these levels essential for enjoying outdoor activities safely. Whether you're lounging on the beach or exploring the vibrant surroundings, staying informed about UV Index can help you safeguard your skin while enjoying all that this beautiful region has to offer.
At dawn, the UV Index starts off low at 1 at 7:00 AM, gradually climbing to a moderate 2 by 8:00 AM. As the sun rises higher in the sky, the UV intensity peaks with values soaring to 8 at both 11:00 AM and 12:00 PM, indicating a need for sun protection. The index then begins to dip, falling to 7 at 1:00 PM and further down to 4 by 2:00 PM, revealing a gradual reduction in UV exposure as the afternoon progresses. By mid-afternoon, the levels continue to decline, resting at 2 by 3:00 PM and eventually returning to 1 by 4:00 PM. As the day winds down into the evening, UV levels drop to 0 by 6:00 PM, signaling a safe time to enjoy the outdoors without concern for UV exposure.
| 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 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | 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 |
Throughout the year, the UV Index in this region fluctuates significantly, indicating varying levels of sun exposure risk. The high-risk months are notable from January to April and then again in August to November, when the UV Index remains at extreme levels (15-14) for most of this period, necessitating caution due to a very short burn time of just 10 minutes. Conversely, from May to July, the index drops slightly to a very high level (10-8), allowing for a burn time of 15 minutes. Visitors and residents should ensure to take precautions during these months, such as seeking shade, wearing protective clothing, and applying sunscreen regularly, especially during peak sun hours to minimize the risk of skin damage.
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 |
| Guaratinga | 15 | 15 | 14 | 13 | 10 | 8 | 9 | 11 | 12 | 14 | 15 | 15 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |