Last updated: August 22, 2025
In December, the average temperature in Santo Tome, Argentina is a pleasant 24°C (76°F). However, prepare for a wide temperature range, with minimums dropping to 10°C (51°F) and maximums soaring to 38°C (101°F). Expect 97 mm (3.8 in) of precipitation over about 7 days, contributing to an average humidity level of 57%. Whether you’re enjoying warm days or cooler nights, be ready for a variety of weather in this vibrant locale!
In December in Santo Tome, the average temperature is 24°C (76°F), with maximums reaching 38°C (101°F) and minimums dropping as low as 10°C (51°F). This makes Santo Tome an ideal destination for travelers looking to enjoy warm weather while still having cooler moments to refresh.
In Santo Tome in December, the precipitation amount is 97 mm (3.8 in) over the course of 7 days.
In Santo Tome in December humidity is 57%. With an average temperature of 24°C (76°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls but also a bit sticky for those unaccustomed to the climate, so travelers should stay hydrated and take occasional breaks in the shade.
In Santo Tome 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 Santo Tome, you can check here.
UV Risk Categories
Weather in Santo Tome varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santo Tome, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (78°F) | 125 mm (4.9 inches) | 51% | extreme |
| February Weather | 24°C (76°F) | 61 mm (2.4 inches) | 57% | extreme |
| March Weather | 22°C (72°F) | 105 mm (4.1 inches) | 65% | extreme |
| April Weather | 20°C (68°F) | 103 mm (4.1 inches) | 76% | very high |
| May Weather | 15°C (60°F) | 83 mm (3.3 inches) | 83% | high |
| June Weather | 13°C (55°F) | 45 mm (1.8 inches) | 78% | moderate |
| July Weather | 12°C (53°F) | 36 mm (1.4 inches) | 58% | moderate |
| August Weather | 14°C (57°F) | 27 mm (1.1 inches) | 54% | high |
| September Weather | 16°C (62°F) | 51 mm (2.0 inches) | 59% | very high |
| October Weather | 19°C (66°F) | 108 mm (4.2 inches) | 50% | extreme |
| November Weather | 22°C (72°F) | 75 mm (2.9 inches) | 53% | extreme |
| December Weather | 24°C (76°F) | 97 mm (3.8 inches) | 57% | extreme |