Last updated: June 2, 2025
In Sao Miguel do Iguacu, understanding the UV Index is vital for protecting your skin from harmful ultraviolet rays, especially in a climate characterized by warm summers and mild winters. With UV levels peaking between 11:00 AM and 1:00 PM, awareness is essential for sunburn prevention and long-term skin health. As UV Index readings rise to levels 6 during midday, residents and visitors alike should take precautionary measures to enjoy the sun safely while minimizing the risk of skin damage. Stay informed and embrace the sunny days with confidence!
The UV Index throughout the day presents a dynamic interplay of sunlight, peaking at 12:00 PM and 1:00 PM with a robust 6. Early risers will enjoy the gentle warmth with a UV Index of 0 at 7:00 AM, slowly climbing to 1 by 8:00 AM. As the morning progresses, it reaches 3 at 10:00 AM and then escalates to its highest at noon. Afternoon hours see a gradual decline, dipping back to 5 at 2:00 PM before gently dropping to 3 by 3:00 PM. As the sun sets, the index retreats below 1 from 5:00 PM onward, concluding with a soothing 0 at 6:00 PM and remaining steady until dusk. Make sure to stay protected during the peak hours, especially when the sun's rays are at their strongest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | 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 Index levels fluctuate significantly, posing varying risks for visitors and residents. The highest UV exposure occurs from January to March, where the UV Index reaches a maximum of 15, categorized as extreme, with a burn time of just 10 minutes. As we transition into April, the index drops to 10 (very high), allowing for slightly longer exposure at 15 minutes. Summer months (May to July) offer a high UV Index, averaging 6-7, prompting a burn time of 25 minutes. However, August and September see a return to very high levels with indices at 8 and 10, respectively. As the year closes, October to December presents yet another spike in extreme levels, peaking at 15 in November with burn times reverting to 10 minutes. Visitors and residents are advised to take precautionary measures, especially during the high-risk months of January, February, March, October, November, and December, by wearing protective clothing, applying sunscreen, and limiting sun exposure during peak hours to prevent 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 Miguel do Iguacu | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 10 | 13 | 15 | 14 |
| 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 |