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January Weather in San Antonio, Paraguay

Last updated: August 31, 2025

In January, the average temperature in San Antonio, Paraguay is a warm 28°C (83°F), making it an ideal time for outdoor activities. Temperatures can range from a cool 15°C (60°F) to a sweltering 41°C (106°F). While you're soaking up the sun, don't forget that precipitation is expected to be around 130 mm (5.1 in) over 12 days, with average humidity levels at a high 80%. Enjoy your experience while staying hydrated!

January Temperature in San Antonio

In January in San Antonio, the average temperature is 28°C (83°F). Maximums can reach 41°C (106°F) and minimums can be as low as 15°C (60°F). Be prepared for a warm climate and pack accordingly for both hot days and cooler evenings during your travels.

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

The chart illustrates January temperature patterns in San Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Antonio, January typically has an average temperature of 28°C (83°F), with highs reaching up to 41°C (106°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec828178746865636772757881
Data source: Temperature data for San Antonio 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 Antonio

In San Antonio in January, the precipitation amount is 130 mm (5.1 in) over a span of 12 days.

January Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, 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 Antonio, January typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1309010712913578505478199160111
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Antonio

In San Antonio in January, humidity is 80%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making travel feel sluggish and sticky, as every movement generates a sheen of perspiration that clings to your skin.

January Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, 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 Antonio is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%74%75%80%80%67%61%41%46%49%72%82%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Antonio

In San Antonio 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 Antonio, you can check here.

Maximum UV Index Levels in San Antonio for January

The chart shows the monthly maximum UV Index (UVI) for San Antonio 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 Antonio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14141310756810131414
Data source: San Antonio 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 Antonio Compares to Other Months

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

This table compares monthly weather conditions in San Antonio, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (83°F)130 mm (5.1 inches)80%extreme
February Weather27°C (81°F)90 mm (3.6 inches)74%extreme
March Weather26°C (79°F)107 mm (4.2 inches)75%extreme
April Weather23°C (74°F)129 mm (5.1 inches)80%very high
May Weather20°C (68°F)135 mm (5.3 inches)80%high
June Weather18°C (65°F)78 mm (3.1 inches)67%moderate
July Weather17°C (63°F)49 mm (1.9 inches)61%high
August Weather19°C (67°F)54 mm (2.1 inches)40%very high
September Weather22°C (73°F)78 mm (3.1 inches)46%very high
October Weather24°C (76°F)199 mm (7.8 inches)49%extreme
November Weather26°C (79°F)160 mm (6.3 inches)72%extreme
December Weather27°C (81°F)110 mm (4.3 inches)82%extreme

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