January Weather in San Mateo, Mexico

Last updated: August 27, 2025

In January, the average temperature in San Mateo, Mexico is a pleasant 23°C (74°F). Expect a minimum of 12°C (54°F) and a maximum of 31°C (88°F), providing a comfortable range for outdoor activities. With only 14 mm (0.6 in) of precipitation over 0 days, you'll likely enjoy mostly dry weather, while an average humidity of 68% adds a touch of balminess to the air.

January Temperature in San Mateo

In January in San Mateo, the average temperature is 23°C (74°F). Maximums can reach 31°C (88°F) and minimums can be as low as 12°C (54°F). This comfortable climate makes it an ideal time to explore the local attractions and enjoy outdoor activities.

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

The chart illustrates January temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, January typically has an average temperature of 23°C (74°F), with highs reaching up to 31°C (88°F) and lows dropping to around 12°C (54°F).

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

January Precipitation in San Mateo

In San Mateo in January, the precipitation amount is 14 mm (0.6 in) recorded over a span of 0 days.

January Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, January typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 0 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 Mateo

In San Mateo in January, humidity is 68%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making traveling quite uncomfortable if you're not prepared. The air is thick and muggy, leaving you yearning for a cool breeze and frequent breaks in the shade.

January Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo is approximately 68%, 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 Mateo

In San Mateo in January, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Mateo.

Maximum UV Index Levels in San Mateo for January

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 8, which falls under the very high exposure category.

Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	14 mm (0.6 inches)	68%	very high
February Weather	23°C (73°F)	19 mm (0.7 inches)	70%	very high
March Weather	23°C (73°F)	0 mm (0.0 inches)	70%	extreme
April Weather	22°C (73°F)	0 mm (0.0 inches)	72%	extreme
May Weather	24°C (76°F)	1 mm (0.1 inches)	73%	extreme
June Weather	26°C (80°F)	116 mm (4.6 inches)	74%	extreme
July Weather	28°C (82°F)	100 mm (3.9 inches)	73%	extreme
August Weather	27°C (82°F)	272 mm (10.7 inches)	74%	extreme
September Weather	27°C (81°F)	253 mm (10.0 inches)	73%	extreme
October Weather	27°C (80°F)	174 mm (6.8 inches)	72%	extreme
November Weather	25°C (78°F)	26 mm (1.0 inches)	69%	very high
December Weather	24°C (75°F)	8 mm (0.3 inches)	70%	high