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August Weather in San Mateo, Mexico

Last updated: August 27, 2025

In August, the average temperature in San Mateo, Mexico is a comfortable 18°C (64°F), with a range that can dip to a minimum of 9°C (49°F) and peak at a maximum of 25°C (78°F). Visitors should be prepared for a wet month, as 267 mm (10.5 in) of precipitation typically falls over 29 days. Additionally, the average humidity sits at a notable 74%, contributing to the overall atmosphere of this beautiful destination.

August Temperature in San Mateo

In August in San Mateo, the average temperature is 18°C (64°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop to as low as 9°C (49°F). This pleasant climate makes San Mateo an ideal destination for outdoor activities and exploration.

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

The chart illustrates August temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, August typically has an average temperature of 18°C (64°F), with highs reaching up to 25°C (78°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec535659636565646464615754
Data source: Temperature data for San Mateo 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 Mateo

In San Mateo in August, the total precipitation amount is 267 mm (10.5 in) spread over 29 days.

August Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, August typically receives around 267 mm (10.5 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec575074871442471922672922509235
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Mateo

In San Mateo in August humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

August Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Mateo

In San Mateo 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 Mateo, you can check here.

Maximum UV Index Levels in San Mateo for August

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131414141414131298
Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)57 mm (2.2 inches)88%very high
February Weather14°C (57°F)50 mm (2.0 inches)86%extreme
March Weather15°C (60°F)74 mm (2.9 inches)83%extreme
April Weather17°C (63°F)87 mm (3.4 inches)80%extreme
May Weather19°C (66°F)144 mm (5.7 inches)82%extreme
June Weather18°C (65°F)247 mm (9.7 inches)79%extreme
July Weather18°C (64°F)192 mm (7.5 inches)72%extreme
August Weather18°C (64°F)267 mm (10.5 inches)74%extreme
September Weather18°C (64°F)291 mm (11.5 inches)84%extreme
October Weather16°C (62°F)250 mm (9.8 inches)92%extreme
November Weather14°C (57°F)92 mm (3.6 inches)91%very high
December Weather12°C (54°F)35 mm (1.4 inches)91%very high

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