January Weather in Aliso Viejo, United States

Last updated: June 24, 2025

In January, the average temperature in Aliso Viejo, United States hovers around 14°C (58°F). Visitors can expect a minimum temperature of 8°C (46°F) and a pleasant maximum of 27°C (81°F). Rainfall is typical, with an average precipitation amount of 60 mm (2.3 in) spread over about 5 days. Additionally, the air is generally humid, with an average humidity level of 74%, creating a distinct atmosphere for exploring the locale.

January Temperature in Aliso Viejo

In January, in Aliso Viejo, the average temperature is 14°C (58°F). The maximum can reach 27°C (81°F), while the minimum can drop to as low as 8°C (46°F). This makes Aliso Viejo a comfortable destination for outdoor activities and sightseeing during this time of year.

January Weather in Aliso Viejo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Aliso Viejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aliso Viejo, January typically has an average temperature of 14°C (58°F), with highs reaching up to 27°C (81°F) and lows dropping to around 8°C (46°F).

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

January Precipitation in Aliso Viejo

In Aliso Viejo in January, the precipitation amount reached 60 mm (2.3 in) over a span of 5 days.

January Precipitation Trends in Aliso Viejo

The chart displays monthly precipitation patterns in Aliso Viejo, 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 Aliso Viejo, January typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 5 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 Aliso Viejo

In Aliso Viejo in January humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.

January Average Humidity in Aliso Viejo

This chart illustrates the average monthly humidity levels in Aliso Viejo, 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 Aliso Viejo is approximately 74%, 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 Aliso Viejo

In Aliso Viejo in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Aliso Viejo for better planning.

Maximum UV Index Levels in Aliso Viejo for January

The chart shows the monthly maximum UV Index (UVI) for Aliso Viejo 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 Aliso Viejo typically reaches 4, which falls under the moderate exposure category.

Data source: Aliso Viejo 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 Aliso Viejo Compares to Other Months

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

This table compares monthly weather conditions in Aliso Viejo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (58°F)	60 mm (2.3 inches)	74%	moderate
February Weather	14°C (57°F)	55 mm (2.2 inches)	79%	high
March Weather	14°C (58°F)	54 mm (2.1 inches)	75%	very high
April Weather	16°C (61°F)	25 mm (1.0 inches)	70%	very high
May Weather	16°C (62°F)	14 mm (0.5 inches)	70%	extreme
June Weather	18°C (65°F)	3 mm (0.1 inches)	72%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	73%	extreme
August Weather	22°C (71°F)	3 mm (0.1 inches)	69%	very high
September Weather	21°C (70°F)	3 mm (0.1 inches)	68%	very high
October Weather	20°C (68°F)	9 mm (0.4 inches)	67%	high
November Weather	17°C (63°F)	22 mm (0.8 inches)	68%	moderate
December Weather	14°C (58°F)	69 mm (2.7 inches)	71%	moderate