January Weather in San Fernando, Mexico

Last updated: August 27, 2025

In January, the average temperature in San Fernando, Mexico hovers around 17°C (63°F). Visitors can expect a range of temperatures, with a chilly minimum of -1°C (31°F) and the potential for a warm maximum of 36°C (98°F). Additionally, 24 mm (0.9 in) of precipitation may fall over 4 days, while the air remains quite humid, with an average humidity level of 84%.

January Temperature in San Fernando

In January in San Fernando, the average temperature is 17°C (63°F). The maximum can reach 36°C (98°F), while the minimum can be as low as -1°C (31°F). This variation in temperature makes it essential for travelers to pack accordingly for both warm and cool conditions.

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

The chart illustrates January temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, January typically has an average temperature of 17°C (63°F), with highs reaching up to 36°C (98°F) and lows dropping to around -1°C (31°F).

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

January Precipitation in San Fernando

In San Fernando in January, the precipitation amount is 24 mm (0.9 in) over a period of 4 days.

January Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, 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 Fernando, January typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 4 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 Fernando

In San Fernando in January, humidity is 84%. With an average temperature of 17°C (63°F), this humidity feels like a warm, sticky embrace that can make traveling feel heavy and cumbersome, often leaving visitors yearning for refreshing breezes and shade.

January Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, 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 Fernando 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 Fernando

In San Fernando 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 Fernando.

Maximum UV Index Levels in San Fernando for January

The chart shows the monthly maximum UV Index (UVI) for San Fernando 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 Fernando typically reaches 7, which falls under the high exposure category.

Data source: San Fernando 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 Fernando Compares to Other Months

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

This table compares monthly weather conditions in San Fernando, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	24 mm (0.9 inches)	84%	high
February Weather	19°C (67°F)	16 mm (0.6 inches)	83%	very high
March Weather	22°C (73°F)	36 mm (1.4 inches)	78%	extreme
April Weather	25°C (78°F)	30 mm (1.2 inches)	81%	extreme
May Weather	28°C (83°F)	58 mm (2.3 inches)	82%	extreme
June Weather	29°C (85°F)	72 mm (2.9 inches)	74%	extreme
July Weather	30°C (86°F)	86 mm (3.4 inches)	68%	extreme
August Weather	30°C (87°F)	25 mm (1.0 inches)	67%	extreme
September Weather	28°C (83°F)	109 mm (4.3 inches)	75%	extreme
October Weather	25°C (77°F)	87 mm (3.4 inches)	78%	very high
November Weather	21°C (70°F)	33 mm (1.3 inches)	83%	very high
December Weather	18°C (66°F)	13 mm (0.5 inches)	86%	high