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July Weather in San Luis, Guatemala

Last updated: August 23, 2025

In July, the average temperature in San Luis, Guatemala hovers around 27°C (80°F). While you can expect a comfortable minimum of 20°C (69°F), the heat can peak at a balmy 36°C (97°F). Be prepared for some moisture, as the region experiences approximately 115 mm (4.5 in) of precipitation spread over 24 days. With an average humidity of 66%, it's a season that feels both warm and refreshing!

July Temperature in San Luis

In July in San Luis, the average temperature is 27°C (80°F). Maximums can reach 36°C (97°F), while minimums can be as low as 20°C (69°F). This pleasant climate makes San Luis an ideal destination for outdoor activities and exploration.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec727476808281808080777472
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.

July Precipitation in San Luis

In San Luis in July, the precipitation amount is 115 mm (4.5 in) over a period of 24 days.

July Precipitation Trends in San Luis

The chart displays monthly precipitation patterns in San Luis, 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 Luis, July typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec7045555413120411513819926717982
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Luis

In San Luis in July, humidity is 66%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace, making travel a bit more challenging as you may find yourself perspiring more quickly while exploring, but it's also perfect for a refreshing dip in nearby waters.

July Average Humidity in San Luis

This chart illustrates the average monthly humidity levels in San Luis, 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 Luis is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%78%67%62%62%63%66%73%82%86%87%88%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Luis

In San Luis in July, 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 Luis.

Maximum UV Index Levels in San Luis for July

The chart shows the monthly maximum UV Index (UVI) for San Luis 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 Luis typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121314141313131312109
Data source: San Luis 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 Luis Compares to Other Months

Weather in San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)70 mm (2.8 inches)85%very high
February Weather23°C (74°F)45 mm (1.8 inches)78%extreme
March Weather24°C (76°F)55 mm (2.2 inches)67%extreme
April Weather27°C (81°F)54 mm (2.1 inches)62%extreme
May Weather28°C (82°F)131 mm (5.2 inches)62%extreme
June Weather27°C (81°F)204 mm (8.0 inches)63%extreme
July Weather27°C (80°F)115 mm (4.5 inches)66%extreme
August Weather27°C (80°F)138 mm (5.4 inches)73%extreme
September Weather26°C (80°F)199 mm (7.8 inches)82%extreme
October Weather25°C (78°F)267 mm (10.5 inches)86%extreme
November Weather23°C (74°F)179 mm (7.1 inches)87%very high
December Weather22°C (72°F)82 mm (3.2 inches)87%very high

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