Last updated: August 22, 2025
In December, the average temperature in San Nicolas de los Arroyos, Argentina hovers around 24°C (75°F), making it a delightful time to explore. However, be prepared for fluctuations, as temperatures can dip as low as 10°C (50°F) or soar up to a sweltering 39°C (102°F). Expect a precipitation amount of 74 mm (2.9 in) spread over 8 days, and enjoy comfortable conditions with an average humidity of 51%. Plan your activities accordingly for an enjoyable visit!
In December in San Nicolas de los Arroyos, the average temperature is 24°C (75°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 10°C (50°F). This wide temperature range makes it essential for travelers to pack accordingly, preparing for both warm days and cooler nights.
In San Nicolas de los Arroyos in December, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.
In San Nicolas de los Arroyos in December humidity is 51%. With an average temperature of 24°C (75°F), this humidity feels like a pleasantly warm embrace, making it ideal for leisurely strolls and outdoor exploration without overwhelming discomfort.
In San Nicolas de los Arroyos 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 Nicolas de los Arroyos, you can check here.
UV Risk Categories
Weather in San Nicolas de los Arroyos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Nicolas de los Arroyos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (78°F) | 105 mm (4.1 inches) | 48% | extreme |
| February Weather | 24°C (75°F) | 69 mm (2.7 inches) | 55% | extreme |
| March Weather | 22°C (71°F) | 84 mm (3.3 inches) | 64% | extreme |
| April Weather | 19°C (67°F) | 124 mm (4.9 inches) | 76% | very high |
| May Weather | 15°C (59°F) | 70 mm (2.8 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 29 mm (1.1 inches) | 77% | moderate |
| July Weather | 11°C (52°F) | 33 mm (1.3 inches) | 62% | moderate |
| August Weather | 13°C (55°F) | 41 mm (1.6 inches) | 59% | high |
| September Weather | 16°C (60°F) | 69 mm (2.7 inches) | 62% | very high |
| October Weather | 18°C (65°F) | 67 mm (2.6 inches) | 52% | extreme |
| November Weather | 22°C (71°F) | 70 mm (2.8 inches) | 56% | extreme |
| December Weather | 24°C (75°F) | 74 mm (2.9 inches) | 51% | extreme |