nomadseason

August Weather in San Juan, Peru

Last updated: August 27, 2025

In August, the average temperature in San Juan, Peru is a delightful 26°C (79°F), with temperatures ranging from a comfortable 17°C (63°F) to a warm 35°C (95°F). During the month, anticipate 107 mm (4.2 in) of precipitation over about 15 days, contributing to a relatively high average humidity of 58%. Enjoy the vibrant climate while exploring all that San Juan has to offer!

August Temperature in San Juan

In August in San Juan, the average temperature is 26°C (79°F). Maximums can reach 35°C (95°F) and minimums can be as low as 17°C (63°F). This ideal climate makes San Juan a perfect destination for travel during this time of year.

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

The chart illustrates August 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, August typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°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.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in San Juan

In San Juan in August, the total precipitation amount is 107 mm (4.2 in) spread over 15 days.

August Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In San Juan, August typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec251226321305223193145107152188233273
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in San Juan

In San Juan in August, humidity is 58%. With an average temperature of 26°C (79°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but slightly muggy, an ideal time to explore the local attractions while staying hydrated.

August Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in San Juan is approximately 58%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in San Juan

In San Juan in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Juan.

Maximum UV Index Levels in San Juan for August

The chart shows the monthly maximum UV Index (UVI) for San Juan in August, 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 August, the maximum UV index in San Juan typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151617161312111213141313
Data source: San Juan August 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 August 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 August’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 August’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

Compare San Juan's Climate with Cities Worldwide