Last updated: August 22, 2025
In December, the average temperature in Santa Ana, Argentina hovers around 25°C (77°F). Expect a comfortable range, with minimums dipping to 10°C (50°F) and maximums soaring to 39°C (102°F). However, prepare for some rain, as the month typically sees about 68 mm (2.7 in) of precipitation over 6 days. With an average humidity of 68%, make sure to stay hydrated!
In December in Santa Ana, the average temperature is 25°C (77°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 10°C (50°F). It's a great time for travelers to enjoy a mix of warm days and cooler evenings, so packing appropriately is essential for a comfortable experience.
In Santa Ana in December, the precipitation amount is 68 mm (2.7 in) spread over the course of 6 days.
In Santa Ana in December, humidity is 68%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that can quickly become stifling for traveling, making outdoor activities feel more strenuous and the air thick and heavy.
In Santa Ana 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 Santa Ana, you can check here.
UV Risk Categories
Weather in Santa Ana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Ana, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (79°F) | 122 mm (4.8 inches) | 59% | extreme |
| February Weather | 25°C (77°F) | 109 mm (4.3 inches) | 56% | extreme |
| March Weather | 23°C (73°F) | 94 mm (3.7 inches) | 69% | extreme |
| April Weather | 20°C (69°F) | 100 mm (4.0 inches) | 78% | very high |
| May Weather | 16°C (61°F) | 132 mm (5.2 inches) | 82% | high |
| June Weather | 13°C (56°F) | 110 mm (4.3 inches) | 81% | moderate |
| July Weather | 13°C (55°F) | 62 mm (2.4 inches) | 66% | moderate |
| August Weather | 14°C (58°F) | 95 mm (3.7 inches) | 54% | high |
| September Weather | 17°C (63°F) | 120 mm (4.7 inches) | 60% | very high |
| October Weather | 19°C (67°F) | 127 mm (5.0 inches) | 59% | extreme |
| November Weather | 23°C (73°F) | 93 mm (3.7 inches) | 57% | extreme |
| December Weather | 25°C (77°F) | 68 mm (2.7 inches) | 68% | extreme |