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August Weather in San Ramon, United States

Last updated: June 24, 2025

In August, the average temperature in San Ramon, United States is a comfortable 20°C (69°F), with lows dipping to 12°C (53°F) and highs reaching up to an impressive 40°C (104°F). Expect 0 mm (0.0 in) of precipitation spread over 0 days, making it a perfect time for outdoor activities. Additionally, air humidity levels hover around 54%, creating a pleasant atmosphere.

August Temperature in San Ramon

In August in San Ramon, the average temperature is 20°C (69°F). Maximums can reach 40°C (104°F), and minimums can be as low as 12°C (53°F). This makes San Ramon an ideal destination for travelers seeking warm weather but also prepared for cooler evenings.

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

The chart illustrates August temperature patterns in San Ramon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ramon, August typically has an average temperature of 20°C (69°F), with highs reaching up to 40°C (104°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec505254576166686867635550
Data source: Temperature data for San Ramon 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 Ramon

In San Ramon in August, the precipitation amount is 0 mm (0.0 in) during 0 days.

August Precipitation Trends in San Ramon

The chart displays monthly precipitation patterns in San Ramon, 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 Ramon, August typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec94897730172002223876
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Ramon

In San Ramon in August humidity is 54%. With an average temperature of 20°C (69°F), this humidity feels like a refreshing embrace, making it comfortable for traveling while allowing for pleasant outdoor activities.

August Average Humidity in San Ramon

This chart illustrates the average monthly humidity levels in San Ramon, 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 Ramon is approximately 54%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Ramon

In San Ramon in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Ramon.

Maximum UV Index Levels in San Ramon for August

The chart shows the monthly maximum UV Index (UVI) for San Ramon 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 Ramon typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109753
Data source: San Ramon 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 Ramon Compares to Other Months

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

This table compares monthly weather conditions in San Ramon, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)94 mm (3.7 inches)82%moderate
February Weather11°C (52°F)89 mm (3.5 inches)84%moderate
March Weather12°C (54°F)77 mm (3.0 inches)82%very high
April Weather14°C (58°F)30 mm (1.2 inches)78%very high
May Weather16°C (61°F)17 mm (0.7 inches)71%very high
June Weather19°C (66°F)2 mm (0.1 inches)64%extreme
July Weather20°C (68°F)0 mm (0.0 inches)58%extreme
August Weather20°C (69°F)0 mm (0.0 inches)54%very high
September Weather20°C (68°F)2 mm (0.1 inches)55%very high
October Weather17°C (63°F)22 mm (0.9 inches)62%high
November Weather13°C (55°F)38 mm (1.5 inches)78%moderate
December Weather10°C (50°F)76 mm (3.0 inches)80%moderate

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