January Weather in Oakland, United States

Last updated: June 24, 2025

In Oakland, United States, the average temperature in January hovers around 0°C (32°F), with minimums plummeting to -17°C (2°F) and maximums reaching 18°C (65°F). Expect 70 mm (2.8 in) of precipitation spread over approximately 8 days, and prepare for a notably high average humidity of 84%—perfect for those cozy indoor days!

January Temperature in Oakland

In January in Oakland, the average temperature is 0°C (32°F). Maximums can reach 18°C (65°F) and minimums can be as low as -17°C (2°F). Be prepared for a wide temperature range and dress in layers for your travels!

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

The chart illustrates January temperature patterns in Oakland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakland, January typically has an average temperature of 0°C (32°F), with highs reaching up to 18°C (65°F) and lows dropping to around -17°C (2°F).

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

January Precipitation in Oakland

In Oakland in January, the total precipitation amount is 70 mm (2.8 in), spread over the course of 8 days.

January Precipitation Trends in Oakland

The chart displays monthly precipitation patterns in Oakland, 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 Oakland, January typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 8 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 Oakland

In Oakland in January, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.

January Average Humidity in Oakland

This chart illustrates the average monthly humidity levels in Oakland, 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 Oakland is approximately 84%, 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 Oakland

In Oakland 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 Oakland, you can check the information here.

Maximum UV Index Levels in Oakland for January

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

Data source: Oakland 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 Oakland Compares to Other Months

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

This table compares monthly weather conditions in Oakland, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	70 mm (2.8 inches)	84%	moderate
February Weather	2°C (35°F)	99 mm (3.9 inches)	82%	moderate
March Weather	4°C (40°F)	95 mm (3.8 inches)	81%	high
April Weather	10°C (51°F)	118 mm (4.7 inches)	78%	very high
May Weather	16°C (61°F)	130 mm (5.1 inches)	69%	very high
June Weather	21°C (70°F)	99 mm (3.9 inches)	69%	very high
July Weather	24°C (76°F)	147 mm (5.8 inches)	62%	very high
August Weather	23°C (74°F)	131 mm (5.2 inches)	65%	very high
September Weather	20°C (68°F)	114 mm (4.5 inches)	68%	very high
October Weather	14°C (58°F)	141 mm (5.6 inches)	74%	high
November Weather	6°C (44°F)	88 mm (3.5 inches)	82%	moderate
December Weather	2°C (36°F)	111 mm (4.4 inches)	80%	low