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June Weather in San Juan, Peru

Last updated: August 27, 2025

In San Juan, Peru, the average temperature in June hovers around 6°C (43°F). During this time, temperatures can dip as low as -8°C (18°F) and rise to a maximum of 18°C (64°F). Expect 49 mm (1.9 in) of precipitation spread over 9 days, accompanied by a comfortable average humidity of 67%.

June Temperature in San Juan

In June in San Juan, the average temperature is 6°C (43°F). The maximum can reach 18°C (64°F), and the minimum can be as low as -8°C (18°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates June 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, June typically has an average temperature of 6°C (43°F), with highs reaching up to 18°C (64°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec474747454443424345464647
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.

June Precipitation in San Juan

In San Juan in June, the total precipitation amount is 49 mm (1.9 in) spread over 9 days.

June Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In San Juan, June typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec254268323142724941369310683146
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in San Juan

In San Juan in June humidity is 67%. With an average temperature of 6°C (43°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor exploration somewhat uncomfortable and prompting a need for warm, moisture-wicking clothing while traveling.

June Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in San Juan is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%90%90%84%67%53%47%53%67%75%83%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in San Juan

In San Juan in June, 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 June

The chart shows the monthly maximum UV Index (UVI) for San Juan in June, 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 June, the maximum UV index in San Juan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181818161311121416171818
Data source: San Juan June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)254 mm (10.0 inches)89%extreme
February Weather8°C (47°F)268 mm (10.6 inches)90%extreme
March Weather8°C (47°F)323 mm (12.7 inches)90%extreme
April Weather7°C (46°F)142 mm (5.6 inches)90%extreme
May Weather6°C (44°F)72 mm (2.8 inches)84%extreme
June Weather6°C (43°F)49 mm (1.9 inches)67%extreme
July Weather6°C (43°F)41 mm (1.6 inches)53%extreme
August Weather6°C (44°F)35 mm (1.4 inches)47%extreme
September Weather7°C (46°F)93 mm (3.7 inches)53%extreme
October Weather8°C (46°F)106 mm (4.2 inches)67%extreme
November Weather8°C (47°F)83 mm (3.3 inches)75%extreme
December Weather8°C (47°F)146 mm (5.7 inches)82%extreme

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