Last updated: June 2, 2025
In Curitiba, Brazil, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps prevent sunburn and reduces the risk of long-term skin damage, which is especially important in a city where the moderate Cfb climate can still expose residents to significant UV radiation. Typically, UV levels peak during midday, soaring to a high of 6 between 12 PM and 1 PM, necessitating care when basking in the sun's rays. Stay informed and shield your skin to enjoy a safe, sun-filled day in Curitiba!
Throughout the day, the UV Index escalates to its peak between 12:00 PM and 1:00 PM, reaching a high of 6—a clear indicator to stay protected from the sun's rays. Early morning hours see a gentle start, with a maximum 1 at 7:00 AM and 8:00 AM, gradually rising to 2 by 9:00 AM. As the sun climbs, so does the intensity, spiking to 5 at 11:00 AM and maintaining a steady 6 for the peak hours. Following this brief burst of intensity, the UV Index dwindles swiftly, dropping to 4 by 2:00 PM, then further decreasing to 3 at 3:00 PM, and tapering off to 1 by 4:00 PM. Finally, as daylight fades, the index plummets to 0 by 6:00 PM, marking the end of a vibrant, sunlit day. Remember to stay safe and protect your skin, especially during midday hours!
| 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 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 4 | 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 shows significant seasonal variations, with extreme risk levels dominating from January to April and then again in September and November. The highest UV readings peak at 15 during the winter months and early spring, indicating a burn time of just 10 minutes. Following this period, there is a notable decrease in UV Index readings, dropping to a high risk level in June and July at 6, where burn times extend to 25 minutes. As August arrives, the index rises again to 9 in the very high category before reverting to extreme levels in the fall months. Given this data, it is crucial for both visitors and residents to exercise caution, particularly during high-risk months (January-April, September, November) by wearing protective clothing, sunscreen, and limiting sun exposure to mitigate harmful 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 |
| Curitiba | 15 | 15 | 13 | 11 | 8 | 6 | 6 | 9 | 11 | 13 | 15 | 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 |