Last updated: August 22, 2025
In San Salvador, Argentina, the average temperature in December hovers around 24°C (76°F). Expect a range, with temperatures dipping to a cool 8°C (47°F) and soaring high to 39°C (102°F). During this month, you can anticipate about 100 mm (3.9 in) of precipitation spread over 6 days, along with an average humidity of 68%. Enjoy the variety that December brings!
In December in San Salvador, the average temperature is 24°C (76°F). Maximum can reach 39°C (102°F) and the minimum can be as low as 8°C (47°F). This variation makes San Salvador a great destination for travelers seeking a mix of warm and cool weather experiences.
In San Salvador in December, the precipitation amount is 100 mm (3.9 in) spread over 6 days.
In San Salvador in December humidity is 68%. With an average temperature of 24°C (76°F), this humidity feels like a warm, steamy embrace that makes traveling both invigorating and slightly exhausting, as the air clings to your skin and encourages leisurely breaks in the shade.
In San Salvador 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 Salvador, you can check here.
UV Risk Categories
Weather in San Salvador varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Salvador, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (78°F) | 126 mm (4.9 inches) | 59% | extreme |
| February Weather | 24°C (75°F) | 92 mm (3.6 inches) | 56% | extreme |
| March Weather | 22°C (72°F) | 84 mm (3.3 inches) | 69% | extreme |
| April Weather | 20°C (67°F) | 104 mm (4.1 inches) | 78% | very high |
| May Weather | 15°C (60°F) | 139 mm (5.5 inches) | 82% | moderate |
| June Weather | 13°C (55°F) | 98 mm (3.9 inches) | 81% | moderate |
| July Weather | 12°C (54°F) | 66 mm (2.6 inches) | 66% | moderate |
| August Weather | 14°C (57°F) | 92 mm (3.6 inches) | 54% | high |
| September Weather | 16°C (61°F) | 101 mm (4.0 inches) | 60% | very high |
| October Weather | 19°C (66°F) | 104 mm (4.1 inches) | 59% | extreme |
| November Weather | 22°C (72°F) | 84 mm (3.3 inches) | 57% | extreme |
| December Weather | 24°C (76°F) | 100 mm (3.9 inches) | 68% | extreme |