Last updated: August 22, 2025
In December, the average temperature in General Jose de San Martin, Argentina hovers around 27°C (81°F), with minimums dipping to 14°C (57°F) and maximums soaring up to 40°C (105°F). Expect 64 mm (2.5 in) of precipitation spread over about 7 days, accompanied by a humidity level averaging 82%. Stay prepared for both warmth and occasional rain!
In December in General Jose de San Martin, the average temperature is 27°C (81°F). The maximum can reach 40°C (105°F) and the minimum can be as low as 14°C (57°F). Be prepared for warm days and cooler nights when traveling during this month.
In General Jose de San Martin in December, the precipitation amount is 64 mm (2.5 in) accumulated over a period of 7 days.
In General Jose de San Martin in December humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.
In General Jose de San Martin 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 General Jose de San Martin.
UV Risk Categories
Weather in General Jose de San Martin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in General Jose de San Martin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 28°C (82°F) | 131 mm (5.1 inches) | 76% | extreme |
| February Weather | 27°C (80°F) | 65 mm (2.6 inches) | 70% | extreme |
| March Weather | 25°C (77°F) | 107 mm (4.2 inches) | 73% | extreme |
| April Weather | 22°C (72°F) | 115 mm (4.5 inches) | 83% | very high |
| May Weather | 19°C (66°F) | 123 mm (4.8 inches) | 85% | high |
| June Weather | 17°C (63°F) | 59 mm (2.3 inches) | 73% | moderate |
| July Weather | 16°C (61°F) | 40 mm (1.6 inches) | 63% | high |
| August Weather | 18°C (65°F) | 34 mm (1.3 inches) | 44% | very high |
| September Weather | 21°C (70°F) | 91 mm (3.6 inches) | 50% | very high |
| October Weather | 23°C (74°F) | 123 mm (4.8 inches) | 53% | extreme |
| November Weather | 25°C (77°F) | 150 mm (5.9 inches) | 66% | extreme |
| December Weather | 27°C (81°F) | 64 mm (2.5 inches) | 82% | extreme |