Last updated: August 22, 2025
In San Ignacio, Argentina, the average temperature in December is a warm 26°C (79°F). Visitors can expect a comfortable range, with minimum temperatures dipping to 12°C (55°F) and peaks reaching up to 38°C (101°F). During this time, the region sees about 82 mm (3.2 in) of precipitation spread over 10 days, accompanied by a notable average humidity of 84%.
In December in San Ignacio, the average temperature is 26°C (79°F). Maximums can reach 38°C (101°F), while minimums can dip as low as 12°C (55°F). It's advisable to pack light clothing for the daytime and a light jacket for the cooler evenings while traveling.
In San Ignacio in December, the total precipitation amount is 82 mm (3.2 in) observed over a span of 10 days.
In San Ignacio in December, humidity is 84%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel sticky and exhausting, yet the vibrant atmosphere and lush surroundings offer a refreshing allure that invites exploration.
In San Ignacio 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 Ignacio, you can check here.
UV Risk Categories
Weather in San Ignacio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Ignacio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (80°F) | 171 mm (6.7 inches) | 77% | extreme |
| February Weather | 26°C (78°F) | 92 mm (3.6 inches) | 71% | extreme |
| March Weather | 24°C (76°F) | 124 mm (4.9 inches) | 74% | extreme |
| April Weather | 22°C (71°F) | 116 mm (4.6 inches) | 82% | very high |
| May Weather | 18°C (65°F) | 224 mm (8.8 inches) | 82% | high |
| June Weather | 17°C (62°F) | 97 mm (3.8 inches) | 73% | moderate |
| July Weather | 16°C (61°F) | 88 mm (3.5 inches) | 67% | high |
| August Weather | 18°C (64°F) | 69 mm (2.7 inches) | 49% | high |
| September Weather | 21°C (70°F) | 107 mm (4.2 inches) | 54% | very high |
| October Weather | 22°C (73°F) | 178 mm (7.0 inches) | 58% | extreme |
| November Weather | 24°C (76°F) | 141 mm (5.5 inches) | 69% | extreme |
| December Weather | 26°C (79°F) | 82 mm (3.2 inches) | 84% | extreme |