December Weather in Bainbridge Island, United States

Last updated: February 24, 2025

December on Bainbridge Island offers a unique blend of crisp air and frequent rainfall, making it a month of transition. With average temperatures hovering around 6°C (43°F), residents can expect daily highs of up to 13°C (56°F), while the mercury may dip as low as -5°C (24°F). Rainfall is substantial, with an accumulation of 179 mm (7.1 in) over approximately 18 days, contributing to the island's lush winter landscape. Coupled with a high humidity level of 87%, this month is characterized by its moist, chilly atmosphere, perfect for cozying up indoors or exploring the serene, rain-kissed scenery.

December Temperature in Bainbridge Island

As winter settles in, Bainbridge Island experiences a notable drop in temperatures during December. This month typically sees minimums dipping to -5°C (24°F) and an average temperature hovering around 6°C (43°F), offering a chill that marks the season. The maximum temperatures reach a mild 13°C (56°F), suggesting brief respite from the cold, yet overall, the month reflects a distinct shift towards the winter chill compared to the more moderate conditions of previous months. This trend of decreasing temperatures from the fall months sets the stage for a cozy, yet brisk winter atmosphere, inviting residents and visitors alike to embrace the season's charm.

December Weather in Bainbridge Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Bainbridge Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434146505661666661534843
Data source: Temperature data for Bainbridge Island 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 Bainbridge Island

In December, Bainbridge Island experiences a notable increase in precipitation, measuring 179 mm (7.1 in), making it one of the wettest months of the year. The rain falls on 18 days, aligning with the trend of heightened moisture during the latter part of the year, as November also sees substantial rainfall at 168 mm (6.6 in). This surge in precipitation signals the onset of winter, characterized by shorter days and cooler temperatures, while the dramatic drop in rainfall during the summer months, like July and August—when only 26 mm (1.0 in) and 25 mm (1.0 in) are recorded respectively—highlights the seasonal contrasts unique to this region. Overall, December wraps up the year with a wet farewell, contributing to the lush landscapes Bainbridge Island is renowned for.

December Precipitation Trends in Bainbridge Island

The chart displays monthly precipitation patterns in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec163142111966965262584136168179
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bainbridge Island

December in Bainbridge Island experiences a noticeable uptick in humidity, with levels reaching 87%, the highest of the year. This increase follows a trend of consistently high humidity throughout the colder months, starting from November's 86%. As the year progresses, there's a clear shift: summer months like August and July see much lower humidity, dipping to 73% and 82%, respectively. However, as autumn sets in, humidity begins to rise again, creating a cycle where cooler months are marked by moisture-laden air, fostering the lush greenery for which Bainbridge Island is known. The transition from the dry summer to the moist winter underscores the island’s maritime climate, ultimately enhancing its serene coastal ambiance.

December Average Humidity in Bainbridge Island

This chart illustrates the average monthly humidity levels in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bainbridge Island

As the year winds down, December in Bainbridge Island sees a significant dip in the UV Index, registering a low value of 1. This decrease marks a transition from the very high indices experienced during the peak summer months. With a burn time of 45 minutes, outdoor enthusiasts can enjoy the crisp winter air without the usual sun damage risks, allowing for longer exposure while staying safe. This trend highlights the dramatic shift in UV radiation throughout the year, emphasizing the importance of adapting sun protection practices accordingly. For more insights into seasonal variations, check out the Bainbridge Island UV Index.

Maximum UV Index Levels in Bainbridge Island for December

The chart shows the monthly maximum UV Index (UVI) for Bainbridge Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Bainbridge Island 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 Bainbridge Island

As December rolls in on Bainbridge Island, the daylight begins to wane, offering about 93 hours of sunshine, a notable dip as the year wraps up. This month reflects a downward trend in sunlight, following the peak summer months of June and July, where residents basked in 311 and 361 hours respectively. While November’s shorter days provided 114 hours of glow, December brings a cozy darkness, inviting residents to embrace the warmth of indoor gatherings. Despite the reduced sunlight, the island's natural beauty remains captivating, making those precious sunny moments all the more cherished as the community prepares to welcome the new year.

Monthly Sunshine Duration in Bainbridge Island: December Highlighted

The December sunshine duration represents the total number of hours Bainbridge Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec80h123h199h229h299h311h361h330h254h190h114h93h
Data source: Bainbridge Island December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bainbridge Island During December

As December rolls in on Bainbridge Island, the likelihood of sunny weather takes a notable dip, with only a 14% chance of sunshine. This trend reflects a gradual decline from the relatively brighter months, peaking at 67% in July and showcasing a stark contrast through the colder seasons. January, with a slim 17%, and November, at 15%, also experience limited sun, but December stands out as one of the cloudiest months. The overall pattern reveals a seasonal shift towards gloominess as winter approaches, inviting residents and visitors alike to embrace the cozy warmth of indoor activities as they anticipate the brighter days of spring that lie ahead.

Percentage of Sunny Days in December in Bainbridge Island

The chart illustrates the percentage of sunny days in Bainbridge Island 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 Bainbridge Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%20%30%50%38%58%67%49%37%25%15%14%
Data source: Bainbridge Island December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bainbridge Island in December

As December settles in on Bainbridge Island, daylight hours shrink to a modest 8 hours, mirroring the onset of winter's embrace. This reduction reflects a broader trend seen throughout the year, where the days gradually lengthen from January's 8 hours to a peak of 15 hours in June, the summer solstice. Following this peak, daylight begins its steady decline, ultimately descending back to the winter minimum. The cyclical shift from the deep, warm light of summer to the crisp, shorter days of December not only marks the changing seasons but also invites residents to cherish those fleeting daylight moments amidst the cozy indoor gatherings that winter brings.

Average Daylight Hours in Bainbridge Island for December

The chart illustrates the variation in daylight duration in Bainbridge Island throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 53m10h 15m11h 57m13h 41m15h 10m15h 55m15h 30m14h 10m12h 29m10h 46m9h 14m8h 27m
Data source: Bainbridge Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bainbridge Island

As December arrives on Bainbridge Island, the average wind speed picks up, reaching 4.0 m/s (9 mph), a notable increase from the calm of summer months. This shift mirrors a seasonal trend where wind speeds generally rise in the latter part of the year; notably, November registers even higher at 4.2 m/s (9 mph). It’s a time when the gentle breezes of earlier months give way to brisk winds, setting the stage for the winter season's invigorating chill. As we transition from the stillness of summer, with averages dropping to a mere 2.1 m/s (5 mph) in July, December's winds remind us of nature's rhythms, wrapping the island in a refreshing gust that beckons outdoor adventures amidst the holiday festivities.

Average December Wind Speed in Bainbridge Island

The chart displays monthly wind speed patterns in Bainbridge Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.23.02.62.62.62.12.32.93.64.24.0 m/s
Data source: Bainbridge Island December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bainbridge Island Compares to Other Months

The weather in Bainbridge Island 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 Bainbridge Island and find detailed weather information for every month.

In December, temperatures can dip as low as -5°C (24°F) and typically range from an average of 6°C (43°F) to a high of 13°C (56°F). The month is characterized by significant precipitation, averaging 179 mm (7.1 in) over 18 days and a humidity level of 87%. Conversely, January shows a slight improvement in the temperature with a minimum of -3°C (26°F) and a maximum of 14°C (57°F), maintaining the same average of 6°C (44°F). Precipitation is also slightly lower in January, totaling 163 mm (6.4 in) across 16 days, with humidity slightly reduced to 86%. For more detailed insights, you can check the Bainbridge Island weather in January.

December and February share similar temperature ranges, with both months experiencing minimums around -5°C (24°F) and maximums peaking at 13°C (56°F). However, December tends to be slightly warmer on average at 6°C (43°F) compared to February's average of 5°C (42°F). Precipitation levels are also noteworthy; December receives about 179 mm (7.1 in) over 18 days, while February sees a decrease to 142 mm (5.6 in) across 20 days, indicating a wetter but shorter rainy season in December. Humidity levels are quite high in both months, though February is slightly less humid at 84% compared to December's 87%. For more detailed insights into February weather, you can check out Bainbridge Island weather in February.

In December, the weather is quite chilly, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 13°C (56°F) and an average temperature of 6°C (43°F). This month also sees significant precipitation, totaling 179 mm (7.1 in) over 18 days, along with a high humidity level of 87%. In contrast, March brings a noticeable warming trend, with temperatures starting at a minimum of 0°C (32°F) and peaking at 22°C (71°F), resulting in an average temperature of 8°C (46°F). Although March experiences less precipitation at 111 mm (4.4 in) over 17 days and slightly lower humidity at 85%, it offers a more pleasant and spring-like atmosphere. For more detailed insights into March weather, check out Bainbridge Island weather in March.

December weather is characterized by colder temperatures, with minimums dipping to -5°C (24°F) and averaging around 6°C (43°F). The month experiences significant precipitation, totaling 179 mm (7.1 in) over 18 days, contributing to high humidity levels of 87%. In contrast, April brings a noticeable warming trend, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 21°C (70°F) and an average of 10°C (50°F). While April still has some rainfall, it is considerably less, with 96 mm (3.8 in) over 15 days and a slightly lower humidity of 83%. For a more detailed look at April weather, you can check out Bainbridge Island weather in April.

December and May present stark contrasts in weather patterns. In December, temperatures range from a chilly -5°C (24°F) to a mild 13°C (56°F), with an average of 6°C (43°F), while May brings warmer conditions, with temperatures ranging from 6°C (43°F) to a pleasant 25°C (77°F) and an average of 13°C (56°F). December is characterized by significant precipitation, receiving 179 mm (7.1 in) across 18 days and elevated humidity at 87%. In contrast, May experiences much lighter rainfall, with only 69 mm (2.7 in) over 12 days and a humidity level of 84%. For a closer look at the weather specifics for May, check out Bainbridge Island weather in May.

December and June present contrasting weather patterns, highlighting the seasonal shifts. In December, temperatures can dip as low as -5°C (24°F) with an average of 6°C (43°F) and a maximum of 13°C (56°F). This month also sees significant precipitation, averaging 179 mm (7.1 in) over 18 days, resulting in high humidity levels around 87%. In contrast, June offers a much milder climate with temperatures ranging from a minimum of 9°C (48°F) to a comfortable average of 16°C (61°F), peaking at 33°C (92°F). Precipitation is considerably lower in June, totaling 65 mm (2.6 in) across 11 days, and humidity is slightly less at 84%. For more details on June weather specific to Bainbridge Island, you can check Bainbridge Island weather in June.

December and July exhibit contrasting weather patterns, with December characterized by colder temperatures ranging from a minimum of -5°C (24°F) to a maximum of 13°C (56°F), accompanied by significant precipitation of 179 mm (7.1 in) over 18 days. The humidity is notably high at 87%, contributing to a chilly and damp atmosphere. In stark contrast, July boasts much warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 28°C (83°F), alongside minimal precipitation of just 26 mm (1.0 in) over only 6 days. The humidity in July is slightly lower at 82%, creating a comfortable and pleasant summer climate. For more details, check out Bainbridge Island weather in July.

When comparing the weather in December and August, it becomes evident that these two months offer vastly different experiences. December is characterized by colder temperatures, with averages around 6°C (43°F) and occasional highs of 13°C (56°F), while August boasts much warmer conditions, featuring average temperatures of 19°C (67°F) and highs reaching up to 34°C (93°F). Precipitation also varies greatly; December sees significant rainfall, totaling 179 mm (7.1 in) over 18 days, contrasting sharply with August's milder 25 mm (1.0 in) spread over just 7 days. Additionally, humidity levels are higher in December at 87%, compared to August's 73%. For a more detailed look at the climate during this summer month, visit Bainbridge Island weather in August.

The weather in December contrasts significantly with that of September. In December, temperatures can drop to a chilly minimum of -5°C (24°F), with an average around 6°C (43°F) and a maximum reaching 13°C (56°F). This winter month is characterized by higher humidity at 87% and substantial rainfall, averaging 179 mm (7.1 in) over approximately 18 days. In comparison, September offers milder conditions, with minimum temperatures of 9°C (48°F) and an average of 16°C (62°F), peaking at 28°C (83°F). This autumn month sees less precipitation, about 84 mm (3.3 in) over 13 days, and lower humidity at 74%. For more detailed information on September weather, visit Bainbridge Island weather in September.

The weather in December is notably colder than in October, with average temperatures ranging from a chilly 6°C (43°F) compared to October's milder average of 12°C (53°F). December sees minimum temperatures dipping as low as -5°C (24°F), while October's lows are a more manageable 2°C (36°F). Additionally, December experiences higher precipitation levels, averaging 179 mm (7.1 in) over 18 days, compared to October's 136 mm (5.4 in) over 16 days. Humidity is also slightly higher in December at 87%, compared to 83% in October. For those interested in more detailed information, you can check Bainbridge Island weather in October.

In comparing the weather of December and November, December typically experiences colder temperatures, with a minimum reaching down to -5°C (24°F) compared to November's milder minimum of 2°C (35°F). The average temperatures in December are also lower, averaging 6°C (43°F) versus November's 9°C (48°F). Precipitation is slightly higher in December, totaling 179 mm (7.1 in) over 18 days, compared to November's 168 mm (6.6 in) over the same number of days. Humidity levels remain quite similar, with December at 87% and November at 86%. For a closer look at November's climate specifics, visit Bainbridge Island weather in November.

Compare Bainbridge Island's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bainbridge Island

December on Bainbridge Island brings a distinct chill compared to the milder months that precede it, wrapping the island in a cool, damp embrace. With temperatures often dipping into the single digits and frequent precipitation, residents and visitors alike experience a much wetter environment, characterized by its high humidity levels. Unlike the flourishing colors of autumn or the warmth of summer, December’s weather casts a more subdued palette over the landscape, inviting cozy indoor activities and festive gatherings. For those interested in the nuances of seasonal changes beyond December, explore the full spectrum of Bainbridge Island Climate.