December Weather in Oakland, United States

Last updated: February 24, 2025

In December, Oakland experiences a mild climate characterized by a maximum temperature of 23°C (74°F) and an average of 10°C (51°F), while minimum temperatures can dip to 2°C (35°F). With 80 mm (3.2 in) of precipitation spread over 8 days, this month sees a relatively humid environment, with humidity levels reaching 80%. Whether you’re strolling through the city or enjoying the outdoors, be prepared for occasional rain as you embrace the cool, vibrant essence of Oakland in December.

December Temperature in Oakland

In December, Oakland experiences a refreshing transition into winter, characterized by mild temperatures that appeal to those seeking a break from harsher climates. The month starts with minimums around 2°C (35°F), while average temperatures hover at a comfortable 10°C (51°F). Daytime highs rarely exceed 23°C (74°F), creating a pleasant atmosphere for outdoor activities and festivities. Compared to the warmer months, December’s temperatures show a notable dip, yet they remain significantly milder than many other regions in the United States. This blend of coolness paired with a touch of warmth illustrates Oakland's unique climate, making it an inviting destination throughout the holiday season.

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

The chart illustrates December 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.
JanFebMarAprMayJunJulAugSepOctNovDec515254576064646566625550
Data source: Temperature data for Oakland generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Oakland

December in Oakland sees a significant uptick in precipitation, with 80 mm (3.2 in) of rain typically falling over the month across approximately 8 days. As the year draws to a close, this level of rainfall marks a return to wetter conditions after the dry summer months, which often register little to no precipitation from July to September. The December rainfall not only contributes to the lush landscapes of the region but also aligns closely with the wetter earlier winter months of January and February, which maintain similar precipitation levels at 94 mm and 91 mm, respectively. This trend indicates a seasonality in Oakland's climate, where the late fall and early winter months are pivotal for replenishing water sources and sustaining local ecosystems, setting the stage for a vibrant and verdant spring ahead.

December Precipitation Trends in Oakland

The chart displays monthly precipitation patterns in Oakland, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec94917430182001244281
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oakland

As the year comes to a close, December in Oakland showcases a notable uptick in humidity, reaching 80%. This figure is slightly lower than the previous month's 78% but remains higher than the summer months, where humidity dipped to a comfortable low of 54% in August. Throughout the year, humidity shows a fascinating trend: starting at a high of 82% in January and gradually decreasing to its lowest point in July before climbing again in the winter months. This cyclical pattern highlights Oakland's transition from the drier summer months back to the cooler, more humid winter, providing a refreshing reminder of the region's climate diversity as December wraps up the year.

December Average Humidity in Oakland

This chart illustrates the average monthly humidity levels in Oakland, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oakland

In December, Oakland experiences a UV Index of 3, placing it in the moderate exposure category with a burn time of 30 minutes. This marks a return to safer sun exposure levels after a summer characterized by extreme UV risks peaking at 11 in June and July. As fall transitions into winter, the UV Index gradually decreases from November's 4, reflecting a trend of diminishing sunlight exposure. Residents and visitors alike can enjoy outdoor activities with reduced concerns about overexposure, but it’s still wise to remain mindful of the sun. To keep updated on UV levels throughout the year, check the Oakland UV Index.

Maximum UV Index Levels in Oakland for December

The chart shows the monthly maximum UV Index (UVI) for Oakland in December, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: Oakland December 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.

December Sunshine in Oakland

December in Oakland brings a gentle close to the year, with 194 hours of sunshine, a soft decline from the sun-drenched heights of summer. The month typically enjoys a robust transition, with sunlight peaking in June at 355 hours, showcasing a broader trend of increasing daylight from January's 151 hours through to May's 341 hours. As autumn sets in, the hours gradually taper off, reflecting the seasonal shift. By December, while the days are shorter, the persistent sunlight still offers a comforting glow, reminding residents that even in winter, Oakland radiates warmth and charm.

Monthly Sunshine Duration in Oakland: December Highlighted

The December sunshine duration represents the total number of hours Oakland experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec151h216h263h296h341h355h349h320h299h276h225h194h
Data source: Oakland December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oakland During December

When considering the chance of sunny weather in December in Oakland, United States, it's notable that the likelihood sits at a modest 33%. This marks a significant dip compared to the sunnier months of late spring and early summer, where the chances soar to around 70% in May. As the year progresses towards December, the trend reveals a gradual decline in sunny days, with November at 46% and falling sharply into the winter season. This pattern highlights the seasonal shift in Oakland's weather, as the lushness of the earlier months gives way to a cooler, cloudier climate by year's end. Thus, while December offers occasional sunshine, residents should prepare for a higher likelihood of overcast days.

Percentage of Sunny Days in December in Oakland

The chart illustrates the percentage of sunny days in Oakland throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Oakland experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%56%62%57%70%62%51%61%60%54%46%33%
Data source: Oakland December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oakland in December

In Oakland, United States, the month of December brings a return to shorter days, with only 9 hours of daylight. This marks a notable decrease from the brighter summer months, where daylight stretches to a peak of 14 hours in May, June, and July. Following a gradual decline through the autumn, with 10 hours in November, December stands as the winter solstice month, emphasizing the ebbing of daylight. As the year progresses, daylight gradually increases, starting from the mere 9 hours in January and blossoming into longer days as we move toward spring. This cyclical pattern highlights the seasonal rhythm of light in Oakland, inviting residents to embrace the cozy winter months while eagerly anticipating longer days ahead.

Average Daylight Hours in Oakland for December

The chart illustrates the variation in daylight duration in Oakland throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 52m10h 48m11h 59m13h 12m14h 13m14h 44m14h 27m13h 32m12h 22m11h 9m10h 6m9h 34m
Data source: Oakland daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Oakland

As December sweeps into Oakland, the winds gently echo the calmer tones of the season, averaging 2.6 m/s (6 mph). This marks a slight increase from November's tranquil 1.9 m/s (4 mph), suggesting a subtle revival in the breeze as the year draws to a close. Observing the trend throughout the year, we see a gradual rise in wind speed from 2.4 m/s (5 mph) in January, peaking at 3.9 m/s (9 mph) in May before tapering off during the summer months. The transition into December indicates a seasonal ebb, reminiscent of the lighter winds experienced in the earlier months, but still a touch brisker than the fall's stillness. The year’s wind dynamics reflect Oakland's unique climatic rhythm, inviting a refreshing chill that imbues the final month with an invigorating air.

Average December Wind Speed in Oakland

The chart displays monthly wind speed patterns in Oakland, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.72.93.43.93.73.43.12.62.81.92.6 m/s
Data source: Oakland December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Oakland Compares to Other Months

The weather in Oakland changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Oakland and find detailed weather information for every month.

In December, the weather is generally mild, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), averaging around 10°C (51°F). The month sees about 80 mm (3.2 in) of precipitation over approximately 8 days, with humidity levels around 80%. By January, temperatures drop slightly, with minimums reaching 0°C (32°F) and maximums climbing to 25°C (78°F), while still maintaining the same average of 10°C (51°F). Precipitation increases to 94 mm (3.7 in) over 8 days, and humidity rises to 82%, making January slightly wetter and more humid than December. For more detailed information, check out Oakland weather in January.

December and February weather displays some intriguing similarities and differences. In December, temperatures range from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), with an average of 10°C (51°F). The month sees about 80 mm (3.2 in) of precipitation over 8 days, alongside a humidity level of 80%. In contrast, February experiences slightly cooler minimum temperatures at 1°C (34°F) but warmer daytime highs, reaching up to 26°C (78°F) on average, with a higher average temperature of 11°C (53°F). Precipitation increases to 91 mm (3.6 in) over the same 8 days, accompanied by a humidity of 84%. For more specific details regarding the climate in February, you can check Oakland weather in February.

December and March both showcase mild temperatures, but March tends to be slightly warmer overall. In December, temperatures range from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), with an average of 10°C (51°F) and an 80 mm (3.2 in) precipitation spread over 8 days. In contrast, March brings a minimum temperature of 3°C (37°F) and a maximum of 27°C (81°F), with an average of 12°C (54°F). It experiences a little less precipitation at 73 mm (2.9 in) over 10 days, though humidity remains similar at 80% in December and 82% in March. For a deeper look into March weather specifics, you can explore Oakland weather in March.

December and April present contrasting weather patterns. In December, temperatures range from a chilly minimum of 2°C (35°F) to a mild maximum of 23°C (74°F), with an average of 10°C (51°F). This month experiences about 80 mm (3.2 in) of precipitation over 8 days, accompanied by a high humidity level of 80%. In contrast, April brings warmer conditions, with temperatures starting at a minimum of 4°C (40°F) and reaching a maximum of 31°C (88°F), averaging 14°C (58°F). Precipitation significantly decreases to 29 mm (1.2 in) over just 5 days, and humidity slightly drops to 78%. For more detailed information on April weather, visit Oakland weather in April.

In December, temperatures in Oakland tend to be cooler, with a minimum of 2°C (35°F) and an average of 10°C (51°F), peaking at a maximum of 23°C (74°F). This month also sees significant rainfall, averaging 80 mm (3.2 in) over about 8 days, accompanied by high humidity at 80%. In contrast, May brings warmer conditions, with temperatures ranging from a minimum of 6°C (44°F) to an average of 15°C (60°F), and reaching a maximum of 32°C (90°F). Precipitation is notably lower at just 18 mm (0.7 in) over 2 days, and humidity decreases to 71%. For more detailed information, you can check Oakland weather in May.

In December, Oakland experiences cooler temperatures with an average around 10°C (51°F), dipping to a minimum of 2°C (35°F) at night, while daytime highs can reach up to 23°C (74°F). This month also sees more precipitation, averaging 80 mm (3.2 in) over about 8 days, resulting in higher humidity levels at around 80%. In stark contrast, June offers a much warmer climate, with average temperatures around 18°C (64°F) and maximum highs soaring to 37°C (99°F). Rain is virtually absent in June, with only 2 mm (0.1 in) of precipitation and zero rainy days, contributing to a lower humidity of 64%. For more details on June weather, you can check this link: Oakland weather in June.

December weather is characterized by cooler temperatures, with minimums reaching 2°C (35°F) and average highs around 10°C (51°F), while July offers a much warmer climate where temperatures range from a minimum of 11°C (53°F) to a maximum of 32°C (90°F). Additionally, December experiences frequent precipitation, averaging 80 mm (3.2 in) over about 8 days, resulting in high humidity levels of 80%. In contrast, July boasts a completely dry climate with no recorded precipitation and a lower humidity of 58%, making it an ideal time for outdoor activities. For more specific details about July weather, you can check Oakland weather in July.

When comparing the weather in December and August, notable differences emerge in temperature and precipitation patterns. December experiences cooler temperatures with a minimum of 2°C (35°F) and an average of 10°C (51°F), while August boasts warmer conditions, with temperatures ranging from a minimum of 11°C (52°F) to a high of 37°C (99°F). Precipitation also varies significantly; December sees about 80 mm (3.2 in) of rain over eight days, contributing to a humidity level of 80%. In stark contrast, August is dry, receiving no precipitation whatsoever, with a lower humidity of 54%. For more insights on August weather, visit Oakland weather in August.

When comparing the weather in December to September, notable differences emerge. December experiences cooler temperatures, with a minimum of 2°C (35°F) and an average of 10°C (51°F), while September boasts a much warmer average of 19°C (66°F) and maximum temperatures soaring up to 40°C (104°F). Precipitation also varies greatly; December sees 80 mm (3.2 in) of rainfall over 8 days, creating a significantly wetter atmosphere, compared to virtually dry September, which only records 1 mm of precipitation over 0 days. Furthermore, humidity levels are higher in December at 80%, making it feel cooler, while September's humidity rests at a comfortable 55%. For more insights, check out Oakland weather in September.

When comparing the weather in December and October, it's evident that October tends to be warmer and drier. In October, temperatures range from a minimum of 5°C (41°F) to a maximum of 34°C (93°F), with an average of 17°C (63°F). There is minimal precipitation, averaging only 24 mm (1.0 in) over just 1 day, and humidity levels are lower at 62%. In contrast, December experiences cooler temperatures, with a minimum of 2°C (35°F), an average of 10°C (51°F), and a maximum of 23°C (74°F). Monthly precipitation increases significantly to 80 mm (3.2 in) over 8 days, accompanied by higher humidity at 80%. For a more detailed look at October's weather, visit Oakland weather in October.

In comparing the weather between November and December, we see several notable differences. December tends to have slightly cooler temperatures, with a minimum of 2°C (35°F) and an average of 10°C (51°F), while November features a minimum of 3°C (37°F) and a higher average of 13°C (56°F). Additionally, December experiences more precipitation, totaling 80 mm (3.2 in) over 8 days, compared to November's 42 mm (1.7 in) over just 5 days. Humidity levels are also marginally higher in December at 80%, compared to 78% in November. For a more detailed look at November weather patterns, you can refer to Oakland weather in November.

Compare Oakland's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Oakland

As December unfolds in Oakland, the weather transitions into a cooler, wetter pattern that distinctly differs from other months. With average temperatures around 10°C (51°F), residents experience brisk mornings and mild afternoons, creating a refreshing atmosphere. Precipitation becomes more frequent, with approximately 80 mm of rain spread over 8 days, leading to a noticeable increase in humidity levels at 80%. This shift encourages cozy indoor gatherings and festive celebrations as the city embraces the charm of winter. For a more detailed look at Oakland's seasonal weather, visit Oakland Climate.