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August Weather in San Antonio, Colombia

Last updated: August 23, 2025

In August, the average temperature in San Antonio, Colombia reaches a warm 29°C (84°F), with lows around 24°C (75°F) and highs peaking at 39°C (103°F). Visitors should be prepared for some rainfall, as the area experiences an average precipitation of 117 mm (4.6 in) over 19 days. The humidity is typically high at 83%, adding to the tropical atmosphere.

August Temperature in San Antonio

In August in San Antonio, the average temperature is 29°C (84°F), with maximums reaching 39°C (103°F) and minimums dropping to as low as 24°C (75°F). This warm climate makes San Antonio an ideal destination for travelers seeking sunny escapes and outdoor adventures.

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

The chart illustrates August 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, August typically has an average temperature of 29°C (84°F), with highs reaching up to 39°C (103°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec858786858484858483828285
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.

August Precipitation in San Antonio

In San Antonio in August, the total precipitation amount is 117 mm (4.6 in), which falls over the course of 19 days.

August Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In San Antonio, August typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec73195715299841171291439019
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Antonio

In San Antonio in August, humidity is 83%. With an average temperature of 29°C (84°F), this humidity feels like an oppressive blanket enveloping you, making travel feel sticky and uncomfortable as you navigate the streets.

August Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in San Antonio is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%47%45%46%62%81%87%83%83%85%83%65%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Antonio

In San Antonio in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Antonio.

Maximum UV Index Levels in San Antonio for August

The chart shows the monthly maximum UV Index (UVI) for San Antonio in August, 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 August, the maximum UV index in San Antonio typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111214141413121313131110
Data source: San Antonio August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather30°C (86°F)7 mm (0.3 inches)51%extreme
February Weather30°C (87°F)3 mm (0.1 inches)47%extreme
March Weather30°C (86°F)19 mm (0.7 inches)45%extreme
April Weather30°C (86°F)57 mm (2.3 inches)46%extreme
May Weather29°C (84°F)152 mm (6.0 inches)62%extreme
June Weather29°C (84°F)98 mm (3.9 inches)81%extreme
July Weather30°C (85°F)84 mm (3.3 inches)87%extreme
August Weather29°C (84°F)117 mm (4.6 inches)83%extreme
September Weather28°C (83°F)129 mm (5.1 inches)83%extreme
October Weather28°C (82°F)143 mm (5.6 inches)85%extreme
November Weather28°C (83°F)90 mm (3.5 inches)83%extreme
December Weather29°C (85°F)19 mm (0.7 inches)65%very high

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