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June Weather in San Marcos, Mexico

Last updated: August 27, 2025

In San Marcos, Mexico, the average temperature in June hovers around 30°C (86°F), offering a warm climate perfect for outdoor activities. However, be prepared for fluctuations, as temperatures can dip to a chilly 19°C (66°F) and soar up to a scorching 42°C (108°F). Expect a precipitation amount of 12 mm (0.5 in) spread over 3 days, and enjoy a comfortable average humidity level of 64%.

June Temperature in San Marcos

In June in San Marcos, the average temperature is 30°C (86°F). Maximums can reach 42°C (108°F), while minimums can be as low as 19°C (66°F). Travelers should be prepared for hot days and mild evenings, making it ideal for exploring during the cooler parts of the day.

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

The chart illustrates June 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, June typically has an average temperature of 30°C (86°F), with highs reaching up to 42°C (108°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec596672798586858580756761
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.

June Precipitation in San Marcos

In San Marcos in June, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

June Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In San Marcos, June typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec45924122283325511
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in San Marcos

In San Marcos in June humidity is 64%. With an average temperature of 30°C (86°F), this humidity feels like a warm, sticky embrace that can make outdoor activities uncomfortable and somewhat draining for travelers.

June Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in San Marcos is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%62%53%48%52%64%73%71%82%83%82%84%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in San Marcos

In San Marcos in June, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Marcos.

Maximum UV Index Levels in San Marcos for June

The chart shows the monthly maximum UV Index (UVI) for San Marcos in June, 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 June, the maximum UV index in San Marcos typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121313131313131187
Data source: San Marcos June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)4 mm (0.1 inches)70%high
February Weather19°C (67°F)5 mm (0.2 inches)62%very high
March Weather22°C (73°F)9 mm (0.3 inches)53%extreme
April Weather26°C (79°F)2 mm (0.1 inches)48%extreme
May Weather29°C (85°F)4 mm (0.2 inches)52%extreme
June Weather30°C (86°F)12 mm (0.5 inches)64%extreme
July Weather29°C (85°F)22 mm (0.9 inches)73%extreme
August Weather30°C (85°F)8 mm (0.3 inches)71%extreme
September Weather27°C (81°F)33 mm (1.3 inches)82%extreme
October Weather24°C (76°F)24 mm (1.0 inches)83%extreme
November Weather19°C (67°F)5 mm (0.2 inches)82%very high
December Weather16°C (61°F)11 mm (0.4 inches)84%high

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