Last updated: August 1, 2025
Staying informed about the UV Index is crucial for residents of Juan L. Lacaze, Uruguay, where the subtropical Cfa climate exposes individuals to varying levels of ultraviolet radiation throughout the day. Understanding UV levels is essential for preventing sunburn and promoting long-term skin health, especially during peak hours when the index reaches levels 3 to 4 between 11:00 AM and 1:00 PM. With this knowledge, locals can take proactive measures to protect themselves from the sun's harmful effects while enjoying the vibrant outdoor lifestyle that Juan L. Lacaze has to offer.
The UV Index throughout the day reveals a dynamic pattern of sun intensity. In the morning, it starts off low, peaking at 1 by 09:00. As the sun climbs higher, we see a steady increase with the index reaching 3 by 11:00. The highest point occurs from 12:00 to 13:00, where the UV Index hits a robust 4, indicating a need for sun protection during those hours. Following this peak, the index gradually declines, returning to 2 at 15:00, and then dropping back down to 0 by 18:00, marking the end of significant UV exposure for the day. Plan your outdoor activities accordingly to stay safe under the sun!
| 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 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels display significant seasonal changes, with extreme risk months occurring from January to March and again in November and December, where the UV Index peaks at 14 and burn time is as short as 10 minutes. The month of March is notably severe with a UV Index of 11, still categorized as extreme, making it crucial for both visitors and residents to take protective measures. As spring transitions into summer, the UV Index decreases to moderate levels in May through July, allowing for longer safe exposure times of up to 30 minutes. However, caution is still warranted as both August and September experience a rebound with high and very high levels, respectively, necessitating vigilance during outdoor activities. To summarize, it is advisable for everyone to apply sunscreen, wear protective clothing, and seek shade during peak UV times, especially in the high-risk months of January through March and November through December.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Las Piedras UVI | 14 | 13 | 11 | 7 | 5 | 3 | 4 | 6 | 8 | 10 | 13 | 14 |
| Montevideo UVI | 14 | 13 | 11 | 7 | 5 | 3 | 4 | 6 | 8 | 10 | 13 | 14 |
| Juan L. Lacaze | 14 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Paysandu UVI | 15 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Salto UVI | 15 | 13 | 12 | 8 | 5 | 4 | 5 | 6 | 9 | 11 | 13 | 14 |
| Rivera UVI | 15 | 14 | 12 | 9 | 5 | 4 | 5 | 7 | 9 | 12 | 14 | 15 |