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January Weather in San Luis, Argentina

Last updated: August 22, 2025

In San Luis, Argentina, the average temperature in January hovers around 24°C (75°F). Expect lows of 7°C (44°F) and highs peaking at 40°C (104°F). During this period, the region sees about 92 mm (3.6 in) of precipitation spread over 10 days, with an average humidity level of 40%. Stay prepared for a variety of weather conditions!

January Temperature in San Luis

In January in San Luis, the average temperature is 24°C (75°F). The maximum can reach 40°C (104°F), and the minimum can be as low as 7°C (44°F). Be prepared for a range of temperatures and pack accordingly to ensure a comfortable travel experience.

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

The chart illustrates January temperature patterns in San Luis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Luis, January typically has an average temperature of 24°C (75°F), with highs reaching up to 40°C (104°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec757268635548485359647074
Data source: Temperature data for San Luis 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 Luis

In San Luis in January, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.

January Precipitation Trends in San Luis

The chart displays monthly precipitation patterns in San Luis, 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 Luis, January typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9279607232139421327163
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Luis

In San Luis in January, humidity is 40%. With an average temperature of 24°C (75°F), this humidity feels like a pleasant and refreshing atmosphere for traveling, where the warmth is balanced by a comfortable breeze, making outdoor explorations enjoyable.

January Average Humidity in San Luis

This chart illustrates the average monthly humidity levels in San Luis, 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 Luis is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec40%48%53%63%67%61%55%48%45%43%45%40%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Luis

In San Luis in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Luis.

Maximum UV Index Levels in San Luis for January

The chart shows the monthly maximum UV Index (UVI) for San Luis 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 Luis typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151311854468111415
Data source: San Luis 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 Luis Compares to Other Months

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

This table compares monthly weather conditions in San Luis, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)92 mm (3.6 inches)40%extreme
February Weather22°C (72°F)79 mm (3.1 inches)48%extreme
March Weather20°C (69°F)60 mm (2.4 inches)53%extreme
April Weather17°C (63°F)72 mm (2.8 inches)63%very high
May Weather13°C (55°F)32 mm (1.2 inches)67%moderate
June Weather9°C (49°F)13 mm (0.5 inches)61%moderate
July Weather9°C (48°F)9 mm (0.4 inches)55%moderate
August Weather12°C (54°F)4 mm (0.2 inches)48%high
September Weather15°C (59°F)21 mm (0.8 inches)45%very high
October Weather18°C (64°F)32 mm (1.2 inches)43%extreme
November Weather21°C (70°F)71 mm (2.8 inches)45%extreme
December Weather23°C (74°F)63 mm (2.5 inches)40%extreme

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