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July Weather in San Juan, Peru

Last updated: August 27, 2025

In July, the average temperature in San Juan, Peru is a comfortable 25°C (78°F). Expect a pleasant range with minimum temperatures dropping to 17°C (63°F) and maximums reaching 33°C (92°F). This month also brings 145 mm (5.7 in) of precipitation spread over 18 days, adding to the region's average humidity of 69%. Whether you’re exploring or relaxing, be prepared for both sunshine and occasional showers!

July Temperature in San Juan

In July in San Juan, the average temperature is 25°C (78°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 17°C (63°F). Overall, it's an ideal time for travelers seeking warm weather with pleasant evenings.

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

The chart illustrates July temperature patterns in San Juan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan, July typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (92°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979797878777879797979
Data source: Temperature data for San Juan 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 Juan

In San Juan in July, the precipitation amount is 145 mm (5.7 in) over the course of 18 days.

July Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, 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 Juan, July typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec251226321305223193145107152188233273
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Juan

In San Juan in July humidity is 69%. With an average temperature of 25°C (78°F), this humidity feels like a warm and tropical embrace, making traveling a bit sticky but also invigorating as each breath carries a hint of the surrounding environment, perfect for those who enjoy a lively and immersive journey.

July Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, 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 Juan is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%87%89%82%69%58%56%62%77%88%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Juan

In San Juan in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Juan.

Maximum UV Index Levels in San Juan for July

The chart shows the monthly maximum UV Index (UVI) for San Juan 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 Juan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151617161312111213141313
Data source: San Juan 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 Juan Compares to Other Months

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

This table compares monthly weather conditions in San Juan, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)251 mm (9.9 inches)84%extreme
February Weather26°C (79°F)226 mm (8.9 inches)82%extreme
March Weather26°C (79°F)321 mm (12.7 inches)84%extreme
April Weather26°C (79°F)305 mm (12.0 inches)87%extreme
May Weather26°C (79°F)223 mm (8.8 inches)89%extreme
June Weather25°C (78°F)193 mm (7.6 inches)82%extreme
July Weather25°C (78°F)145 mm (5.7 inches)69%extreme
August Weather26°C (79°F)107 mm (4.2 inches)58%extreme
September Weather26°C (80°F)152 mm (6.0 inches)56%extreme
October Weather26°C (80°F)188 mm (7.4 inches)62%extreme
November Weather26°C (80°F)233 mm (9.2 inches)77%extreme
December Weather26°C (79°F)273 mm (10.7 inches)88%extreme

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