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October Weather in San Marcos, Mexico

Last updated: August 27, 2025

In October, the average temperature in San Marcos, Mexico is a warm 27°C (81°F). Temperatures can vary, with a minimum of 22°C (72°F) and a maximum reaching 34°C (94°F). Expect 228 mm (9.0 in) of precipitation spread over 22 days, contributing to an average humidity of 79%.

October Temperature in San Marcos

In October in San Marcos, the average temperature is 27°C (81°F), with maximums reaching 34°C (94°F) and minimums dipping to 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

October Weather in San Marcos: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in San Marcos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Marcos, October typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec808082828482838281818180
Data source: Temperature data for San Marcos 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.

October Precipitation in San Marcos

In San Marcos in October, the total precipitation amount is 228 mm (9.0 in) spread over 22 days.

October Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In San Marcos, October typically receives around 228 mm (9.0 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec2102132371052623032284319
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in San Marcos

In San Marcos in October, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

October Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in San Marcos is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Marcos

In San Marcos in October, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Marcos.

Maximum UV Index Levels in San Marcos for October

The chart shows the monthly maximum UV Index (UVI) for San Marcos in October, 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 October, the maximum UV index in San Marcos typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313141313131198
Data source: San Marcos October 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 October Weather in San Marcos Compares to Other Months

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

This table compares monthly weather conditions in San Marcos, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)2 mm (0.1 inches)65%very high
February Weather27°C (81°F)1 mm (0.0 inches)61%extreme
March Weather28°C (82°F)0 mm (0.0 inches)59%extreme
April Weather28°C (83°F)1 mm (0.1 inches)62%extreme
May Weather29°C (84°F)13 mm (0.5 inches)73%extreme
June Weather28°C (82°F)237 mm (9.3 inches)78%extreme
July Weather29°C (84°F)105 mm (4.1 inches)79%extreme
August Weather28°C (83°F)262 mm (10.3 inches)82%extreme
September Weather27°C (81°F)303 mm (11.9 inches)82%extreme
October Weather27°C (81°F)228 mm (9.0 inches)79%extreme
November Weather27°C (81°F)43 mm (1.7 inches)72%very high
December Weather27°C (80°F)19 mm (0.8 inches)70%very high

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