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January Weather in San Justo, Argentina

Last updated: August 22, 2025

In San Justo, Argentina, the average temperature in January hovers around 26°C (79°F). You can expect a cool minimum of 13°C (55°F) and a scorching maximum of 41°C (106°F). While enjoying the weather, be prepared for some rain, as 130 mm (5.1 in) of precipitation typically falls over 8 days. The air remains relatively comfortable with an average humidity of 51%.

January Temperature in San Justo

In January in San Justo, the average temperature is 26°C (79°F). Maximum temperatures can reach up to 41°C (106°F), while minimums can drop as low as 13°C (55°F). Be prepared for a hot climate with significant temperature variation, so pack accordingly for your travels!

January Weather in San Justo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Justo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Justo, January typically has an average temperature of 26°C (79°F), with highs reaching up to 41°C (106°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec797672686055545762677376
Data source: Temperature data for San Justo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in San Justo

In San Justo in January, the total precipitation amount is 130 mm (5.1 in) over a span of 8 days.

January Precipitation Trends in San Justo

The chart displays monthly precipitation patterns in San Justo, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In San Justo, January typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec13012310597117604462591118682
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Justo

In San Justo in January humidity is 51%. With an average temperature of 26°C (79°F), this humidity feels like a warm embrace, making it pleasantly comfortable for traveling and exploring.

January Average Humidity in San Justo

This chart illustrates the average monthly humidity levels in San Justo, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in San Justo is approximately 51%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%57%65%76%83%78%58%54%59%50%53%57%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Justo

In San Justo in January, 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 Justo, you can check here.

Maximum UV Index Levels in San Justo for January

The chart shows the monthly maximum UV Index (UVI) for San Justo in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in San Justo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312964569111414
Data source: San Justo January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in San Justo Compares to Other Months

Weather in San Justo varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in San Justo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Justo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)130 mm (5.1 inches)51%extreme
February Weather24°C (76°F)123 mm (4.8 inches)57%extreme
March Weather22°C (72°F)105 mm (4.1 inches)65%extreme
April Weather20°C (68°F)97 mm (3.8 inches)76%very high
May Weather16°C (60°F)117 mm (4.6 inches)83%high
June Weather13°C (55°F)60 mm (2.4 inches)78%moderate
July Weather12°C (54°F)44 mm (1.7 inches)58%moderate
August Weather14°C (57°F)62 mm (2.5 inches)54%high
September Weather17°C (63°F)59 mm (2.3 inches)59%very high
October Weather20°C (67°F)111 mm (4.4 inches)50%extreme
November Weather23°C (73°F)86 mm (3.4 inches)53%extreme
December Weather25°C (77°F)82 mm (3.2 inches)57%extreme

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