Last updated: June 2, 2025
Understanding the UV Index in Morro da Fumaca is crucial for maintaining your skin health and preventing sunburn, especially given the area's Cfa climate, which can lead to elevated UV exposure during peak hours. With UV levels peaking at 5 between noon and 1 PM, residents and visitors alike should be aware of the potential risks associated with sun exposure. By monitoring the UV Index, you can take proactive measures to shield yourself from the harmful effects of ultraviolet radiation, ensuring a safer and more enjoyable time under the Brazilian sun.
The UV Index throughout the day presents an intriguing pattern of intensity and fluctuation. Starting early, at 07:00 and 08:00, the levels remain low at 1, providing a gentle reminder to ease into the day. As the sun climbs higher, the index steadily increases, peaking at 12:00 and 13:00 with a notable 5, urging sun-seekers to take precautions. The afternoon sees a slight dip, with values dropping to 3 by 14:00 and 2 by 15:00. As the sun begins to set, the UV Index declines significantly, returning to 1 by 16:00 and ultimately reaching 0 after 18:00. This data underscores the importance of timing for outdoor activities, with the midday hours proving to be the most intense. ☀️
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 3 | 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, UV levels display significant seasonal changes, peaking during the winter months and again in the spring. January, February, March, October, November, and December all register extreme UV indexes at 14, necessitating a mere 10 minutes of exposure before risking burns. April also presents a very high risk (UV Index 10) with a burn time of 15 minutes, while August falls into the high category (UV Index 7) with a 25-minute burn time. May and September are notable for having high and very high UV levels, respectively, while June and July offer moderate exposure conditions (UV Index 5). Visitors and residents should prioritize sunscreen application, wear protective clothing, and limit sun exposure during high-risk months—particularly from January to March and in October to November—to reduce the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Morro da Fumaca | 14 | 14 | 12 | 10 | 6 | 5 | 5 | 7 | 10 | 12 | 14 | 14 |
| 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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |