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August Weather in San Francisco, Colombia

Last updated: August 23, 2025

In August, the average temperature in San Francisco, Colombia hovers around 12°C (54°F), with daily variations ranging from a minimum of 5°C (42°F) to a maximum of 20°C (68°F). It's a wet month, with a total precipitation amount of 161 mm (6.3 in) spread over 21 days. Expect a mild atmosphere with an average humidity of 61%, perfect for enjoying the fresh air!

August Temperature in San Francisco

In August in San Francisco, the average temperature is 12°C (54°F). The maximum can reach 20°C (68°F) and the minimum can be as low as 5°C (42°F). This mild climate makes San Francisco a pleasant destination for travelers looking to explore comfortably.

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

The chart illustrates August temperature patterns in San Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco, August typically has an average temperature of 12°C (54°F), with highs reaching up to 20°C (68°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec565756565655545455565756
Data source: Temperature data for San Francisco 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 Francisco

In San Francisco in August, the total precipitation amount is 161 mm (6.3 in) distributed over 21 days.

August Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, 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 Francisco, August typically receives around 161 mm (6.3 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec205218350336353292231161186274306272
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Francisco

In San Francisco in August, humidity is 61%. With an average temperature of 12°C (54°F), this humidity feels like a cool, crisp embrace that adds a refreshing touch to your travels, making outdoor explorations invigorating yet slightly damp, perfect for leisurely strolls but perhaps a bit brisk for extended activities.

August Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, 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 Francisco is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%66%74%83%93%93%84%61%53%67%78%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Francisco

In San Francisco in August, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Francisco.

Maximum UV Index Levels in San Francisco for August

The chart shows the monthly maximum UV Index (UVI) for San Francisco 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 Francisco typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171719191714151516171513
Data source: San Francisco 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 Francisco Compares to Other Months

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

This table compares monthly weather conditions in San Francisco, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)205 mm (8.1 inches)72%extreme
February Weather14°C (57°F)218 mm (8.6 inches)66%extreme
March Weather14°C (57°F)350 mm (13.8 inches)74%extreme
April Weather13°C (56°F)336 mm (13.2 inches)83%extreme
May Weather13°C (56°F)353 mm (13.9 inches)93%extreme
June Weather13°C (55°F)292 mm (11.5 inches)93%extreme
July Weather12°C (54°F)231 mm (9.1 inches)84%extreme
August Weather12°C (54°F)161 mm (6.3 inches)61%extreme
September Weather13°C (55°F)186 mm (7.3 inches)53%extreme
October Weather13°C (56°F)274 mm (10.8 inches)67%extreme
November Weather14°C (57°F)305 mm (12.0 inches)78%extreme
December Weather13°C (56°F)272 mm (10.7 inches)85%extreme

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