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August Weather in San Juan, Philippines

Last updated: August 27, 2025

In August, the average temperature in San Juan, Philippines is a warm 28°C (83°F), with lows dipping to 25°C (77°F) and highs reaching 33°C (92°F). While you can soak up the sun, be prepared for 364 mm (14.3 in) of rain over 29 days, giving it a humid feel with an average humidity of 89%.

August Temperature in San Juan

In August in San Juan, the average temperature is 28°C (83°F), with a maximum reaching 33°C (92°F) and a minimum dipping as low as 25°C (77°F). This makes it a perfect time to enjoy outdoor activities and explore the beautiful surroundings.

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 28°C (83°F), with highs reaching up to 33°C (92°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec818183848583828282828382
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.

August Precipitation in San Juan

In San Juan in August, the total precipitation amount is 364 mm (14.3 in) spread over a duration of 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 364 mm (14.3 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec154998176204319395364368319196216
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Juan

In San Juan in August, humidity is 89%. With an average temperature of 28°C (83°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities feel sticky and strenuous, and requiring constant hydration to stay comfortable while exploring.

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 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%77%78%85%87%88%89%90%87%90%91%
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 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121416161414141415131211
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 Weather27°C (81°F)154 mm (6.1 inches)85%extreme
February Weather27°C (81°F)99 mm (3.9 inches)80%extreme
March Weather28°C (83°F)81 mm (3.2 inches)77%extreme
April Weather29°C (85°F)76 mm (3.0 inches)78%extreme
May Weather29°C (85°F)204 mm (8.0 inches)84%extreme
June Weather29°C (84°F)319 mm (12.6 inches)87%extreme
July Weather28°C (83°F)395 mm (15.6 inches)88%extreme
August Weather28°C (83°F)364 mm (14.3 inches)89%extreme
September Weather28°C (83°F)368 mm (14.5 inches)90%extreme
October Weather28°C (83°F)319 mm (12.6 inches)87%extreme
November Weather28°C (83°F)196 mm (7.7 inches)90%extreme
December Weather28°C (82°F)216 mm (8.5 inches)91%extreme

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