January Weather in San Juan Jaltepec, Mexico

Last updated: August 27, 2025

In January, the average temperature in San Juan Jaltepec, Mexico is a pleasant 19°C (66°F). Conditions can vary, with minimums dipping to 8°C (47°F) and soaring up to a toasty 33°C (92°F). Expect about 97 mm (3.8 in) of precipitation over 13 days, contributing to an average humidity of 84%.

January Temperature in San Juan Jaltepec

In January in San Juan Jaltepec, the average temperature is 19°C (66°F), with maximums reaching up to 33°C (92°F) and minimums dipping as low as 8°C (47°F). This variety in temperature makes it essential for travelers to pack accordingly, ensuring comfort whether enjoying warm days or cooler evenings.

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

The chart illustrates January temperature patterns in San Juan Jaltepec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Jaltepec, January typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 8°C (47°F).

Data source: Temperature data for San Juan Jaltepec generated using information from the Copernicus Climate Change Service.

January Precipitation in San Juan Jaltepec

In San Juan Jaltepec in January, the precipitation amount is 97 mm (3.8 in) over the course of 13 days.

January Precipitation Trends in San Juan Jaltepec

The chart displays monthly precipitation patterns in San Juan Jaltepec, 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 Juan Jaltepec, January typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in San Juan Jaltepec

In San Juan Jaltepec in January, humidity is 84%. With an average temperature of 19°C (66°F), this humidity feels like a warm, sticky embrace that can make traveling uncomfortable and exhausting, as the air clings to your skin, and every step taken feels heavier in the sultry atmosphere.

January Average Humidity in San Juan Jaltepec

This chart illustrates the average monthly humidity levels in San Juan Jaltepec, 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 Juan Jaltepec is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Juan Jaltepec

In San Juan Jaltepec in January, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Juan Jaltepec.

Maximum UV Index Levels in San Juan Jaltepec for January

The chart shows the monthly maximum UV Index (UVI) for San Juan Jaltepec 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 Juan Jaltepec typically reaches 9, which falls under the very high exposure category.

Data source: San Juan Jaltepec 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 Juan Jaltepec Compares to Other Months

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

This table compares monthly weather conditions in San Juan Jaltepec, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (66°F)	97 mm (3.8 inches)	84%	very high
February Weather	20°C (68°F)	86 mm (3.4 inches)	80%	extreme
March Weather	22°C (71°F)	61 mm (2.4 inches)	73%	extreme
April Weather	24°C (76°F)	52 mm (2.0 inches)	67%	extreme
May Weather	26°C (78°F)	103 mm (4.0 inches)	72%	extreme
June Weather	24°C (76°F)	397 mm (15.6 inches)	73%	extreme
July Weather	24°C (75°F)	190 mm (7.5 inches)	76%	extreme
August Weather	24°C (75°F)	363 mm (14.3 inches)	80%	extreme
September Weather	24°C (75°F)	348 mm (13.7 inches)	84%	extreme
October Weather	23°C (73°F)	344 mm (13.6 inches)	89%	extreme
November Weather	20°C (69°F)	184 mm (7.3 inches)	88%	very high
December Weather	19°C (66°F)	90 mm (3.6 inches)	88%	very high