Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Puerto Rosario, Paraguay, where the sun can be intense year-round. Being aware of UV levels helps in preventing sunburn and protecting skin health, particularly during the peak hours when the UV Index can soar to 7 around midday. Puerto Rosario, nestled in a humid subtropical climate, experiences significant sun exposure, especially in the summer months, making it essential to monitor UV risks daily. By staying informed about the UV Index, you can enjoy the sun safely while safeguarding your skin from harmful effects.
The UV Index reveals an early morning reprieve, starting at a gentle 1 at 7:00 AM and remaining low through 9:00 AM. However, as the sun climbs, intensity increases sharply, peaking at a 7 around noon, signaling the most potent UV exposure of the day. The early afternoon maintains a respectable UV level of 6 at 1:00 PM before gradually tapering off. By mid-afternoon, it drops to 4, then swiftly declines to 1 by 4:00 PM, and finally settles at 0 by 6:00 PM, marking the day's end for UV concern. This hourly trend underscores the importance of sun safety during peak hours, especially between 10 AM and 2 PM.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 6 | 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 |
The UV Index experiences significant fluctuations throughout the year, with extremely high levels observed from January to April, and again in October and November, when the index peaks at 15 (burn time of just 10 minutes) in January, December, and November. The high-risk months are primarily from January to April and again in October to November, where exposure is categorized as extreme. These periods require extra caution, as prolonged sun exposure can lead to severe skin damage in as little as 10 minutes. As we progress into May, the UV Index decreases to 8 (very high), allowing for a slightly safer exposure time of 15 minutes. However, even during summer months like June and July, with a high exposure index of 6 and 7 respectively, it's crucial for visitors and residents to take protective measures, such as wearing sunscreen and protective clothing, especially during peak sun hours. Overall, staying informed and cautious during these high UV periods is essential for health and safety.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lambare UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 14 | 15 |
| Capiata UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 14 | 15 |
| San Lorenzo UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 14 | 15 |
| Asuncion UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 14 | 15 |
| Ciudad del Este UVI | 15 | 15 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 15 | 14 |
| Puerto Rosario | 15 | 14 | 13 | 11 | 8 | 6 | 7 | 8 | 10 | 13 | 14 | 15 |