January Weather in Long Beach, United States

Last updated: June 24, 2025

In January, the average temperature in Long Beach, United States hovers around -2°C (29°F), with extremes ranging from a chilling -27°C (-16°F) to a mild 14°C (57°F). Expect about 73 mm (2.9 in) of precipitation spread across roughly 12 days, contributing to an average humidity level of 85%.

January Temperature in Long Beach

In January in Long Beach, the average temperature is -2°C (29°F). The maximum can reach 14°C (57°F), while the minimum can plummet to -27°C (-16°F). Travelers should be prepared for a wide temperature range and dress in layers to enjoy their stay comfortably.

January Weather in Long Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Long Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Long Beach, January typically has an average temperature of -2°C (29°F), with highs reaching up to 14°C (57°F) and lows dropping to around -27°C (-16°F).

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

January Precipitation in Long Beach

In Long Beach in January, the precipitation amount is 73 mm (2.9 in) occurring over a span of 12 days.

January Precipitation Trends in Long Beach

The chart displays monthly precipitation patterns in Long Beach, 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 Long Beach, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 12 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 Long Beach

In Long Beach in January, humidity is 85%. With an average temperature of -2°C (29°F), this humidity feels like a chilling, damp blanket that clings to your skin, making travel uncomfortable and often prompting an urgent search for warmth and shelter.

January Average Humidity in Long Beach

This chart illustrates the average monthly humidity levels in Long Beach, 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 Long Beach is approximately 85%, 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 Long Beach

In Long Beach in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Long Beach, you can check the information here.

Maximum UV Index Levels in Long Beach for January

The chart shows the monthly maximum UV Index (UVI) for Long Beach 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 Long Beach typically reaches 3, which falls under the moderate exposure category.

Data source: Long Beach 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 Long Beach Compares to Other Months

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

This table compares monthly weather conditions in Long Beach, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-2°C (30°F)	73 mm (2.9 inches)	85%	moderate
March Weather	3°C (39°F)	91 mm (3.6 inches)	86%	high
April Weather	8°C (47°F)	105 mm (4.2 inches)	87%	very high
May Weather	15°C (59°F)	161 mm (6.3 inches)	81%	very high
June Weather	21°C (71°F)	133 mm (5.2 inches)	82%	very high
July Weather	24°C (76°F)	100 mm (3.9 inches)	81%	very high
August Weather	23°C (73°F)	99 mm (3.9 inches)	79%	very high
September Weather	20°C (68°F)	75 mm (2.9 inches)	78%	very high
October Weather	13°C (56°F)	139 mm (5.5 inches)	81%	high
November Weather	5°C (42°F)	72 mm (2.8 inches)	89%	moderate
December Weather	2°C (35°F)	63 mm (2.5 inches)	86%	low