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January Weather in San Isidro, Mexico

Last updated: August 27, 2025

In January, the average temperature in San Isidro, Mexico is a mild 15°C (59°F). Expect a minimum of -1°C (30°F) and a maximum of 29°C (85°F), creating a delightful range for outdoor activities. With only 7 mm (0.3 in) of precipitation spread over 1 day, it’s a great time to enjoy the pleasant weather. Don't forget to bring your favorite gear, as the average humidity is around 70%!

January Temperature in San Isidro

In January in San Isidro, the average temperature is 15°C (59°F). Maximums can reach 29°C (85°F), while minimums can drop as low as -1°C (30°F). This diverse range of temperatures makes San Isidro an ideal destination for travelers seeking a mix of warm and cool weather during their visit.

January Weather in San Isidro: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Isidro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Isidro, January typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (85°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec596571778283808176736660
Data source: Temperature data for San Isidro 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.

January Precipitation in San Isidro

In San Isidro in January, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

January Precipitation Trends in San Isidro

The chart displays monthly precipitation patterns in San Isidro, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In San Isidro, January typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec7795112782399140712
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Isidro

In San Isidro in January, humidity is 70%. With an average temperature of 15°C (59°F), this humidity feels like a warm embrace, making it slightly uncomfortable while traveling, as the moist air clings to your skin and can leave you feeling slightly lethargic.

January Average Humidity in San Isidro

This chart illustrates the average monthly humidity levels in San Isidro, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in San Isidro is approximately 70%, 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 January generated using information from the Copernicus Climate Change Service.

January UV Index in San Isidro

In San Isidro in January, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in San Isidro.

Maximum UV Index Levels in San Isidro for January

The chart shows the monthly maximum UV Index (UVI) for San Isidro in January, 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 January, the maximum UV index in San Isidro typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121414131313131187
Data source: San Isidro January 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 January Weather in San Isidro Compares to Other Months

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

This table compares monthly weather conditions in San Isidro, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)7 mm (0.3 inches)70%high
February Weather18°C (66°F)7 mm (0.3 inches)62%very high
March Weather22°C (71°F)9 mm (0.3 inches)53%extreme
April Weather25°C (77°F)5 mm (0.2 inches)48%extreme
May Weather28°C (82°F)11 mm (0.4 inches)52%extreme
June Weather28°C (83°F)27 mm (1.1 inches)64%extreme
July Weather27°C (80°F)82 mm (3.2 inches)73%extreme
August Weather27°C (81°F)39 mm (1.5 inches)71%extreme
September Weather24°C (76°F)91 mm (3.6 inches)82%extreme
October Weather23°C (73°F)40 mm (1.6 inches)83%extreme
November Weather19°C (66°F)7 mm (0.3 inches)82%very high
December Weather16°C (60°F)12 mm (0.5 inches)84%high

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