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January Weather in San Isidro, Mexico

Last updated: August 27, 2025

In San Isidro, Mexico, the average temperature in January hovers around 16°C (60°F), with minimums dipping to 0°C (32°F) and maximums soaring to 34°C (94°F). Expect about 24 mm (0.9 in) of precipitation spread over 4 days, contributing to a notably high average humidity of 84%.

January Temperature in San Isidro

In January in San Isidro, the average temperature is 16°C (60°F). Maximums can reach 34°C (94°F), and minimums can be as low as 0°C (32°F). This temperature range makes San Isidro an ideal destination for travelers looking to enjoy both warm days and cool nights.

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 16°C (60°F), with highs reaching up to 34°C (94°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec606472778385868882756763
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 24 mm (0.9 in) over a period of 4 days.

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 24 mm (0.9 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec24132647761079317125502418
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 84%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities feel muggy and potentially exhausting for travelers.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%78%81%82%74%68%67%75%78%83%86%
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 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in San Isidro, you can refer to this 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 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec68101212121212111076
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 Weather16°C (60°F)24 mm (0.9 inches)84%high
February Weather18°C (65°F)13 mm (0.5 inches)83%very high
March Weather22°C (72°F)26 mm (1.0 inches)78%very high
April Weather25°C (77°F)47 mm (1.9 inches)81%extreme
May Weather28°C (83°F)76 mm (3.0 inches)82%extreme
June Weather30°C (85°F)106 mm (4.2 inches)74%extreme
July Weather30°C (87°F)93 mm (3.7 inches)68%extreme
August Weather31°C (88°F)17 mm (0.7 inches)67%extreme
September Weather28°C (82°F)125 mm (4.9 inches)75%extreme
October Weather24°C (76°F)50 mm (2.0 inches)78%very high
November Weather20°C (67°F)24 mm (0.9 inches)83%high
December Weather17°C (63°F)18 mm (0.7 inches)86%high

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