Last updated: June 2, 2025
Understanding the UV Index in Guarapuava, Brazil is crucial for protecting your skin and overall health. With the region's moderate climate (Cfa), residents and visitors alike must be aware of UV levels to prevent sunburn and long-term skin damage. Notably, during midday hours, the UV Index can peak at 6, indicating a higher risk of harm and the need for diligent sun protection. By staying informed about UV conditions, individuals can enjoy the beautiful weather while safeguarding their skin from exposure's detrimental effects.
The UV Index data paints a clear picture of the sun's intensity throughout the day. Starting at 0 at 07:00, the index gradually increases as the sun rises, reaching a moderate 1 by 08:00. As the clock ticks towards midday, the UV exposure peaks, hitting a high of 6 between 12:00 and 13:00—the perfect time for sun protection. Afterward, the UV Index begins to decline, dropping to 5 at 14:00 and gently tapering off to 3 by 15:00, before returning to a safe 1 by the late afternoon. Finally, as the sun sets, the UV Index recedes back to 0 from 18:00 onwards, signaling a day that started slowly but burst into vibrant levels of sun intensity.
| 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 | 4 | 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 | 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 exhibits significant seasonal changes, with the highest levels occurring from January to March and during September and October. The months of January, February, November, and December experience an extreme UV Index of 15, with a dangerously short burn time of just 10 minutes. March and April also remain critical months with UV levels of 13 and 11 respectively. The warmer months of May to August see a decline in intensity but still pose risks, particularly in May and August, where the exposure is classified as very high with a burn time of 15 minutes. Visitors and residents are strongly advised to take precautions year-round, especially between January and April and again in September and October, by applying broad-spectrum sunscreen, wearing protective clothing, and limiting sun exposure during peak hours to reduce the risk of harmful UV effects.
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 |
| Guarapuava | 15 | 15 | 13 | 11 | 8 | 6 | 6 | 9 | 11 | 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 |