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July Weather in San Marcos, Guatemala

Last updated: August 23, 2025

In July, the average temperature in San Marcos, Guatemala hovers around 16°C (62°F), with a minimum of 9°C (49°F) and a pleasant maximum of 24°C (75°F). Expect considerable precipitation, averaging 220 mm (8.7 in) over 28 days. The air will feel quite humid too, with an average humidity of 75%, making it a month to prepare for the elements!

July Temperature in San Marcos

In July in San Marcos, the average temperature is 16°C (62°F). Maximums can reach 24°C (75°F), while minimums can drop as low as 9°C (49°F). This makes it a pleasant time to visit, offering mild weather ideal for outdoor activities and sightseeing.

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

The chart illustrates July temperature patterns in San Marcos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Marcos, July typically has an average temperature of 16°C (62°F), with highs reaching up to 24°C (75°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec585960616262616161616058
Data source: Temperature data for San Marcos 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 Marcos

In San Marcos in July, the total precipitation amount is 220 mm (8.7 in) over the course of 28 days.

July Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, 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 Marcos, July typically receives around 220 mm (8.7 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec3129571243814532203594173268538
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Marcos

In San Marcos in July, humidity is 75%. With an average temperature of 16°C (62°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel a bit stifling and sticky, as the air clings to your skin and can sap your energy.

July Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, 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 Marcos is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Marcos

In San Marcos in July, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in San Marcos.

Maximum UV Index Levels in San Marcos for July

The chart shows the monthly maximum UV Index (UVI) for San Marcos 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 Marcos typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121416161515161514141110
Data source: San Marcos 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 Marcos Compares to Other Months

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

This table compares monthly weather conditions in San Marcos, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)31 mm (1.2 inches)76%extreme
February Weather15°C (59°F)29 mm (1.1 inches)68%extreme
March Weather16°C (61°F)57 mm (2.2 inches)59%extreme
April Weather16°C (62°F)124 mm (4.9 inches)57%extreme
May Weather17°C (63°F)381 mm (15.0 inches)65%extreme
June Weather16°C (62°F)453 mm (17.8 inches)66%extreme
July Weather16°C (62°F)220 mm (8.7 inches)75%extreme
August Weather16°C (62°F)358 mm (14.1 inches)82%extreme
September Weather16°C (61°F)417 mm (16.4 inches)82%extreme
October Weather16°C (61°F)326 mm (12.8 inches)83%extreme
November Weather16°C (60°F)85 mm (3.4 inches)80%extreme
December Weather15°C (59°F)38 mm (1.5 inches)76%very high

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