Last updated: August 22, 2025
In December, the average temperature in Puerto Santa Cruz, Argentina is a pleasant 16°C (61°F), with temperatures ranging from a cool 5°C (40°F) to a warm 34°C (93°F). Expect some wet days, as precipitation averages around 30 mm (1.2 in) over 7 days. The air tends to be quite humid, with an average humidity level of 70%.
In December in Puerto Santa Cruz, the average temperature is 16°C (61°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 5°C (40°F). Therefore, travelers should prepare for a range of temperatures and pack accordingly for both warm and cool conditions.
In Puerto Santa Cruz in December, the total precipitation amount is 30 mm (1.2 in) over a span of 7 days.
In Puerto Santa Cruz in December humidity is 70%. With an average temperature of 16°C (61°F), this humidity feels like a warm, damp blanket wrapping around you, making travel somewhat uncomfortable as you navigate the sticky air while trying to enjoy your surroundings.
In Puerto Santa Cruz in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Puerto Santa Cruz.
UV Risk Categories
Weather in Puerto Santa Cruz varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Puerto Santa Cruz, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (61°F) | 29 mm (1.1 inches) | 70% | extreme |
| February Weather | 16°C (62°F) | 24 mm (1.0 inches) | 73% | very high |
| March Weather | 14°C (57°F) | 25 mm (1.0 inches) | 72% | high |
| April Weather | 10°C (51°F) | 25 mm (1.0 inches) | 77% | moderate |
| May Weather | 6°C (44°F) | 25 mm (1.0 inches) | 80% | low |
| June Weather | 3°C (37°F) | 23 mm (0.9 inches) | 81% | low |
| July Weather | 3°C (38°F) | 17 mm (0.7 inches) | 81% | low |
| August Weather | 5°C (42°F) | 21 mm (0.8 inches) | 79% | moderate |
| September Weather | 8°C (47°F) | 16 mm (0.6 inches) | 75% | moderate |
| October Weather | 11°C (51°F) | 20 mm (0.8 inches) | 72% | very high |
| November Weather | 14°C (57°F) | 26 mm (1.0 inches) | 69% | extreme |
| December Weather | 16°C (61°F) | 30 mm (1.2 inches) | 70% | extreme |