Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Puerto Iguazu, Argentina, a region known for its breathtaking waterfalls and lush greenery. The UV levels here can reach a peak of 6 during midday, which signifies a moderate to high risk of harm from unprotected sun exposure. Being aware of these levels helps prevent sunburn and promotes long-term skin health, making it easier to enjoy the area's outdoor delights safely. With its Cfa climate, where the sun shines brightly for much of the year, being informed about UV exposure is essential to protect yourself while soaking in the stunning surroundings of Puerto Iguazu.
At dawn, the UV Index starts at 0 at 07:00, signaling a safe time to step outside. As the sun rises, it gradually increases, reaching a moderate level of 2 by 09:00. The intensity peaks between 12:00 and 13:00, registering a high of 6, indicating that sun protection is essential during these hours. By 14:00, the index begins to decline, dropping to 5 before settling into a more manageable 4 by 15:00. A gentle decrease continues through the late afternoon, with levels falling back to 1 at 17:00, and finally back to 0 by 18:00. This data suggests that the most intense sun exposure occurs during midday, urging sun safety for outdoor activities during these hours.
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 | 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 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, UV exposure levels significantly fluctuate, with January to April marking the highest risk months. The UV Index peaks at 15 in January, February, and November, categorizing these months within the extreme exposure category, where a burn can occur in just 10 minutes. Even in March and October, the UV Index remains dangerously high at 13 and 14, respectively. April experiences a slight decrease to a very high exposure level (UV Index 10), but May dips further to a high category (UV Index 7) with a burn time of 25 minutes. As summer arrives, June sees a moderate index of 5, gradually increasing to high levels again in July and August. Visitors and residents are strongly advised to take precautions during these high-risk months, such as wearing sunscreen, protective clothing, and sunglasses, while limiting sun exposure, especially 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 Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |
Puerto Iguazu | 15 | 15 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 15 | 14 |