Last updated: August 22, 2025
In December, the average temperature in La Merced, Argentina is a pleasant 18°C (65°F). Expect a minimum of 7°C (44°F) and a maximum of 31°C (87°F), making it a month of great temperature variation. With 169 mm (6.6 in) of precipitation spread over 20 days, be prepared for some rain. The average humidity sits at a comfortable 61%, ensuring a balanced atmosphere throughout the month.
In December in La Merced, the average temperature is 18°C (65°F). Maximums can reach 31°C (87°F), while minimums can dip as low as 7°C (44°F). This pleasant climate makes La Merced an ideal destination for outdoor adventures and sightseeing during this time of year.
In La Merced in December, the total precipitation amount is 169 mm (6.6 in) over a span of 20 days.
In La Merced in December humidity is 61%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket enveloping you, making your travels feel more comfortable yet slightly muggy, as you wander through the streets, perhaps seeking shade or a cool drink to help refresh you.
In La Merced in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in La Merced.
UV Risk Categories
Weather in La Merced varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in La Merced, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 19°C (67°F) | 161 mm (6.3 inches) | 63% | extreme |
| February Weather | 18°C (64°F) | 179 mm (7.1 inches) | 66% | extreme |
| March Weather | 16°C (62°F) | 135 mm (5.3 inches) | 68% | extreme |
| April Weather | 14°C (58°F) | 117 mm (4.6 inches) | 83% | very high |
| May Weather | 11°C (52°F) | 56 mm (2.2 inches) | 82% | high |
| June Weather | 8°C (47°F) | 24 mm (0.9 inches) | 72% | moderate |
| July Weather | 8°C (46°F) | 15 mm (0.6 inches) | 57% | high |
| August Weather | 10°C (50°F) | 8 mm (0.3 inches) | 42% | high |
| September Weather | 13°C (55°F) | 37 mm (1.5 inches) | 51% | very high |
| October Weather | 15°C (60°F) | 77 mm (3.0 inches) | 47% | extreme |
| November Weather | 17°C (63°F) | 137 mm (5.4 inches) | 58% | extreme |
| December Weather | 18°C (65°F) | 169 mm (6.6 inches) | 61% | extreme |