Last updated: August 22, 2025
In December, the average temperature in San Pedro, Argentina is a pleasant 24°C (75°F). However, be prepared for a range of conditions; temperatures can dip to as low as 9°C (49°F) and soar up to 39°C (102°F). With an average precipitation of 77 mm (3.0 in) spread across 8 days, and humidity levels around 63%, you might want to pack both your sunscreen and an umbrella for your visit!
In December in San Pedro the average temperature is 24°C (75°F). Maximums can reach 39°C (102°F) and minimums can be as low as 9°C (49°F). This makes San Pedro a great destination for travelers seeking a warm climate while also being prepared for cooler evenings.
In San Pedro in December, the precipitation amount is 77 mm (3.0 in) distributed over 8 days.
In San Pedro in December humidity is 63%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making travel both enjoyable and slightly sticky, encouraging visitors to explore the outdoors while seeking shade intermittently.
In San Pedro in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Pedro, you can check here.
UV Risk Categories
Weather in San Pedro varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Pedro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (77°F) | 72 mm (2.8 inches) | 54% | extreme |
| February Weather | 23°C (75°F) | 84 mm (3.3 inches) | 61% | extreme |
| March Weather | 21°C (71°F) | 101 mm (4.0 inches) | 69% | extreme |
| April Weather | 19°C (66°F) | 114 mm (4.5 inches) | 79% | very high |
| May Weather | 14°C (58°F) | 75 mm (3.0 inches) | 85% | moderate |
| June Weather | 12°C (53°F) | 32 mm (1.3 inches) | 82% | moderate |
| July Weather | 11°C (51°F) | 43 mm (1.7 inches) | 69% | moderate |
| August Weather | 12°C (54°F) | 46 mm (1.8 inches) | 65% | high |
| September Weather | 15°C (59°F) | 71 mm (2.8 inches) | 70% | very high |
| October Weather | 17°C (64°F) | 89 mm (3.5 inches) | 63% | extreme |
| November Weather | 21°C (70°F) | 74 mm (2.9 inches) | 60% | extreme |
| December Weather | 24°C (75°F) | 77 mm (3.0 inches) | 63% | extreme |