Last updated: May 3, 2025
In San Lorenzo, Argentina, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps prevent sunburn and long-term skin damage, making it essential for outdoor enthusiasts and sun worshippers alike. With a Cfa climate characterized by hot summers, the risk of intense UV exposure peaks during midday, often reaching levels of 6 around noon. This means that knowledge of daily UV fluctuations is vital to enjoy the beautiful Argentine sun safely. Stay informed to keep your skin safe while soaking up the radiant rays!
The UV Index throughout the day showcases a dynamic pattern, beginning at a very low level of 0 at 7:00 AM. As the sun rises, the index gradually climbs, reaching 1 by 8:00 AM and 9:00 AM. A noticeable surge occurs at 10:00 AM, escalating to a moderate level of 3. The intensity peaks during midday, hitting 6 at 12:00 PM and maintaining this high level until 1:00 PM. As the afternoon progresses, there’s a gentle decline: it drops to 5 at 2:00 PM, 4 by 3:00 PM, and further down to 2 by 4:00 PM. As evening approaches, the UV Index recedes to 1 at both 5:00 PM and 6:00 PM, before finally returning to 0 by 7:00 PM. This daily cycle emphasizes the importance of sun safety during peak hours when UV radiation is at its strongest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | 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 | 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, the UV Index demonstrates significant seasonal changes that highlight various periods of risk for sun exposure. The highest UV readings occur from January to March, with indices peaking at 15, indicating an extreme risk level and a dangerous burn time of only 10 minutes. Following these months, April presents a slight decrease to 10, categorized as very high, while May and June see a further reduction to 6 and 5, respectively, entering into the high and moderate categories. However, September experiences another spike with a UV Index of 10 before the high-risk months return in October and November, both with extreme levels of 14. To ensure safety, it is advisable for residents and visitors to take precautions during the extreme and very high months, especially from January to March and again in October and November, by wearing appropriate clothing, using sunscreen, and limiting direct sun exposure during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires UVI | 14 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Rosario UVI | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Mendoza UVI | 15 | 14 | 12 | 8 | 6 | 4 | 5 | 6 | 9 | 12 | 14 | 15 |
| Cordoba UVI | 15 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 12 | 14 | 15 |
| San Lorenzo | 15 | 14 | 12 | 10 | 6 | 5 | 5 | 7 | 10 | 12 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |