nomadseason

August Weather in San Juan, Panama

Last updated: August 27, 2025

In San Juan, Panama, the average temperature in August hovers around 25°C (78°F), with a minimum of 21°C (70°F) and a maximum reaching up to 33°C (91°F). Expect 359 mm (14.1 in) of precipitation spread over 29 days, contributing to an average humidity level of 87%. Prepare for a warm and wet experience!

August Temperature in San Juan

In August in San Juan, the average temperature is 25°C (78°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 21°C (70°F). This pleasant weather makes San Juan an ideal destination for travelers looking to enjoy mild temperatures and outdoor activities.

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 25°C (78°F), with highs reaching up to 33°C (91°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec798081817978787877777778
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 precipitation amount is 359 mm (14.1 in) spread over 29 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 359 mm (14.1 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec3187105355353404359459411385103
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 87%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities particularly strenuous and requiring frequent breaks for hydration and shade.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%71%69%70%73%90%89%87%87%86%86%79%
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 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 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 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151513141314141211
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)31 mm (1.2 inches)72%extreme
February Weather27°C (80°F)8 mm (0.3 inches)71%extreme
March Weather27°C (81°F)7 mm (0.3 inches)69%extreme
April Weather27°C (81°F)105 mm (4.1 inches)70%extreme
May Weather26°C (79°F)355 mm (14.0 inches)73%extreme
June Weather26°C (78°F)353 mm (13.9 inches)90%extreme
July Weather26°C (78°F)404 mm (15.9 inches)88%extreme
August Weather25°C (78°F)359 mm (14.1 inches)87%extreme
September Weather25°C (78°F)459 mm (18.1 inches)87%extreme
October Weather25°C (77°F)410 mm (16.2 inches)86%extreme
November Weather25°C (77°F)385 mm (15.1 inches)86%extreme
December Weather26°C (78°F)103 mm (4.1 inches)79%extreme

Compare San Juan's Climate with Cities Worldwide