January Weather in San Bruno, Mexico

Last updated: August 26, 2025

In San Bruno, Mexico, the average temperature in January is a pleasant 16°C (62°F). Visitors can expect temperatures to range from a cool 7°C (44°F) to a warm 26°C (79°F). With an average rainfall of 10 mm (0.4 in) over just 1 day, and humidity levels at around 71%, it's a delightful time to explore the region's beauty!

January Temperature in San Bruno

In January, in San Bruno, the average temperature is 16°C (62°F), with maximums reaching 26°C (79°F) and minimums dropping as low as 7°C (44°F). This mild climate makes San Bruno an ideal destination for travelers seeking comfortable weather and enjoyable outdoor activities.

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

The chart illustrates January temperature patterns in San Bruno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bruno, January typically has an average temperature of 16°C (62°F), with highs reaching up to 26°C (79°F) and lows dropping to around 7°C (44°F).

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

January Precipitation in San Bruno

In San Bruno in January, the precipitation amount is 10 mm (0.4 in) over the course of 1 day.

January Precipitation Trends in San Bruno

The chart displays monthly precipitation patterns in San Bruno, 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 Bruno, January typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 1 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in San Bruno

In San Bruno in January, humidity is 71%. With an average temperature of 16°C (62°F), this humidity feels like a warm, damp embrace, making it a bit uncomfortable for traveling unless you're accustomed to such conditions.

January Average Humidity in San Bruno

This chart illustrates the average monthly humidity levels in San Bruno, 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 Bruno is approximately 71%, 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 Bruno

In San Bruno 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 Bruno, you can refer to this Hourly UV Index in San Bruno.

Maximum UV Index Levels in San Bruno for January

The chart shows the monthly maximum UV Index (UVI) for San Bruno 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 Bruno typically reaches 6, which falls under the high exposure category.

Data source: San Bruno 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 Bruno Compares to Other Months

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

This table compares monthly weather conditions in San Bruno, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	10 mm (0.4 inches)	71%	high
February Weather	17°C (63°F)	5 mm (0.2 inches)	66%	very high
March Weather	19°C (66°F)	8 mm (0.3 inches)	58%	very high
April Weather	22°C (72°F)	0 mm (0.0 inches)	52%	extreme
May Weather	24°C (76°F)	0 mm (0.0 inches)	51%	extreme
June Weather	29°C (84°F)	1 mm (0.0 inches)	51%	extreme
July Weather	31°C (88°F)	8 mm (0.3 inches)	60%	extreme
August Weather	31°C (88°F)	14 mm (0.5 inches)	73%	extreme
September Weather	29°C (85°F)	39 mm (1.6 inches)	76%	extreme
October Weather	26°C (79°F)	6 mm (0.2 inches)	72%	very high
November Weather	22°C (71°F)	10 mm (0.4 inches)	72%	high
December Weather	17°C (63°F)	9 mm (0.4 inches)	72%	moderate