January Weather in Janos, Mexico

Last updated: August 27, 2025

In Janos, Mexico, the average temperature in January hovers around 8°C (47°F). Expect chilly nights with a minimum of -6°C (21°F), while the days can warm up to a pleasant 25°C (78°F). Rainfall averages 17 mm (0.7 in) over just 2 days, accompanied by an average humidity of 79%, creating a refreshing ambiance throughout the month.

January Temperature in Janos

In January in Janos, the average temperature is 8°C (47°F). Maximum temperatures can reach 25°C (78°F), while minimums can dip as low as -6°C (21°F). It's essential to pack layers and be prepared for both warm days and chilly nights during your travels.

January Weather in Janos: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Janos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Janos, January typically has an average temperature of 8°C (47°F), with highs reaching up to 25°C (78°F) and lows dropping to around -6°C (21°F).

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

January Precipitation in Janos

In Janos in January, the precipitation amount is 17 mm (0.7 in) over a span of 2 days.

January Precipitation Trends in Janos

The chart displays monthly precipitation patterns in Janos, 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 Janos, January typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 2 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 Janos

In Janos in January, humidity is 79%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

January Average Humidity in Janos

This chart illustrates the average monthly humidity levels in Janos, 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 Janos is approximately 79%, 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 Janos

In Janos in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Janos.

Maximum UV Index Levels in Janos for January

The chart shows the monthly maximum UV Index (UVI) for Janos 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 Janos typically reaches 5, which falls under the moderate exposure category.

Data source: Janos 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 Janos Compares to Other Months

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

This table compares monthly weather conditions in Janos, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	17 mm (0.7 inches)	79%	moderate
February Weather	11°C (52°F)	13 mm (0.5 inches)	76%	very high
March Weather	15°C (60°F)	13 mm (0.5 inches)	66%	very high
April Weather	20°C (68°F)	3 mm (0.1 inches)	51%	extreme
May Weather	24°C (76°F)	6 mm (0.2 inches)	42%	extreme
June Weather	29°C (84°F)	9 mm (0.4 inches)	37%	extreme
July Weather	27°C (82°F)	51 mm (2.0 inches)	51%	extreme
August Weather	27°C (81°F)	34 mm (1.3 inches)	64%	extreme
September Weather	24°C (76°F)	29 mm (1.1 inches)	74%	extreme
October Weather	20°C (67°F)	14 mm (0.6 inches)	71%	very high
November Weather	14°C (58°F)	14 mm (0.5 inches)	78%	high
December Weather	9°C (48°F)	23 mm (0.9 inches)	85%	moderate