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July Weather in San Antonio, Costa Rica

Last updated: August 23, 2025

In San Antonio, Costa Rica, the average temperature in July hovers around 21°C (69°F), with minimums dipping to 16°C (61°F) and maximums reaching up to 27°C (81°F). Expect 233 mm (9.2 in) of precipitation over approximately 26 days, accompanied by 85% humidity that adds a tropical touch to the atmosphere. Stay prepared for a mix of warm days and frequent rain!

July Temperature in San Antonio

In July in San Antonio, the average temperature is 21°C (69°F). Maximums can reach 27°C (81°F) and minimums can be as low as 16°C (61°F). This pleasant weather makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates July 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, July typically has an average temperature of 21°C (69°F), with highs reaching up to 27°C (81°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec686969706969696968686868
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.

July Precipitation in San Antonio

In San Antonio in July, the precipitation amount is 233 mm (9.2 in) over a span of 26 days.

July Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In San Antonio, July typically receives around 233 mm (9.2 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec3213157939135123333143657020963
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Antonio

In San Antonio in July humidity is 85%. With an average temperature of 21°C (69°F), this humidity feels like a heavy blanket wrapping around you, making even the simplest outdoor activities feel exhausting and sticky, which can be quite challenging for traveling.

July Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in San Antonio is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%68%66%67%69%84%85%82%81%80%80%73%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Antonio

In San Antonio in July, 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 July

The chart shows the monthly maximum UV Index (UVI) for San Antonio in July, 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 July, the maximum UV index in San Antonio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151414141313141210
Data source: San Antonio July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)32 mm (1.3 inches)68%extreme
February Weather20°C (69°F)13 mm (0.5 inches)68%extreme
March Weather21°C (70°F)15 mm (0.6 inches)66%extreme
April Weather21°C (70°F)79 mm (3.1 inches)67%extreme
May Weather21°C (70°F)391 mm (15.4 inches)69%extreme
June Weather21°C (70°F)351 mm (13.8 inches)84%extreme
July Weather21°C (69°F)233 mm (9.2 inches)85%extreme
August Weather20°C (69°F)331 mm (13.0 inches)82%extreme
September Weather20°C (69°F)436 mm (17.2 inches)81%extreme
October Weather20°C (68°F)570 mm (22.4 inches)80%extreme
November Weather20°C (68°F)209 mm (8.2 inches)80%extreme
December Weather20°C (68°F)63 mm (2.5 inches)72%very high

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