December Weather in Bay Harbor, United States

Last updated: February 24, 2025

December in Bay Harbor, United States ushers in a winter wonderland characterized by a maximum temperature of 14°C (57°F), while the average temperature plummets to -2°C (29°F), and the minimum dips as low as -17°C (2°F). The month sees 91 mm (3.6 in) of precipitation spread over 17 days, contributing to a notably high humidity level of 87%. This blend of chilly temperatures and frequent rain creates a unique winter atmosphere, perfect for embracing the season's festivities.

December Temperature in Bay Harbor

In December, Bay Harbor experiences a chilly transition into winter, with temperatures showcasing a significant drop as the year draws to a close. The average temperature hovers around -2°C (29°F), while minimum temperatures can plunge to -17°C (2°F), indicating that the frost is firmly settling in. On the brighter side, the maximum temperatures can reach a milder 14°C (57°F), offering brief respites from the cold. This month reflects a trend of decreasing warmth as compared to the milder fall months preceding it, marking a clear shift towards a wintry ambiance in the region. As snow begins to blanket the landscape, December in Bay Harbor embodies the serene yet crisp beauty of winter’s arrival.

December Weather in Bay Harbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Bay Harbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec232330394960686861503729
Data source: Temperature data for Bay Harbor 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 Bay Harbor

In December, Bay Harbor experiences a noticeable uptick in precipitation, with total rainfall measuring 91 mm (3.6 in) across 17 days. This marks a slight decrease compared to November's totals, which recorded 97 mm (3.8 in) over the same number of days. The trend of increasing wetness leading into winter is evident, as December's precipitation continues from October's peak of 159 mm (6.3 in)—a month that set the stage for the wetter season. While December's rainfall is significant, it remains consistent with the overall pattern of a wetter fall, transitioning into the colder months. This rhythmic cycle of precipitation not only enriches the local ecosystem but also sets the scene for a picturesque, rain-soaked winter landscape in Bay Harbor.

December Precipitation Trends in Bay Harbor

The chart displays monthly precipitation patterns in Bay Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec657663991081038997901599792
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bay Harbor

As December arrives in Bay Harbor, the air carries a notable humidity level of 87%, aligning closely with the preceding months of November and March. This month serves as a transition, maintaining a relatively high moisture content compared to the summer months, where humidity dipped to a low of 75% in July. Interestingly, while winter kicks off, the humidity remains higher than the summer average, hinting at a persistent coastal influence. Overall, the gradual decline from the peak summer humidity of 79% to 87% in winter reflects the shifting weather patterns characteristic of this region, creating a unique blend of comfort and crispness as the year draws to a close.

December Average Humidity in Bay Harbor

This chart illustrates the average monthly humidity levels in Bay Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%87%87%82%79%76%76%79%83%86%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bay Harbor

In December, Bay Harbor experiences a low UV Index of 2, indicating minimal risk for harm from unprotected sun exposure, with a burn time of 45 minutes. As the year winds down, this marks a notable decline from the very high levels seen in the summer months, where the UV Index reached 9 in May through July. The trend shows a gradual decrease from the moderate readings of 4 in February and 5 in March, highlighting the importance of adjusting sun protection habits as we move into winter. For more localized UV Index information, visit Bay Harbor UV Index.

Maximum UV Index Levels in Bay Harbor for December

The chart shows the monthly maximum UV Index (UVI) for Bay Harbor 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.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Bay Harbor 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 Bay Harbor

December in Bay Harbor offers a gentle transition into winter, with 99 hours of sunshine that reflect the month’s quieter charm compared to the bustling summer days. As the year winds down, the sunlight begins to wane after a peak in July, which boasts an impressive 363 hours. Following this peak, the daylight gradually diminishes, dropping to 279 hours in September and further to 127 hours in November. While the sunshine in December is lower than earlier months, the cozy ambiance allows for a peaceful holiday atmosphere, setting the stage for reflection and preparation for the new year. Despite the decrease, Bay Harbor’s December sun still shines brightly, illuminating the beauty of the season.

Monthly Sunshine Duration in Bay Harbor: December Highlighted

The December sunshine duration represents the total number of hours Bay Harbor 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.
JanFebMarAprMayJunJulAugSepOctNovDec83h140h228h243h305h335h363h336h279h195h127h99h
Data source: Bay Harbor December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bay Harbor During December

In Bay Harbor, December brings a notable drop in the likelihood of sunny weather, with only a 14% chance of sunshine. This trend reflects a broader pattern as the year progresses: following the peak sunny months of July to September, which each enjoy around 52% sun, there is a gradual decline in sunny days leading into the winter months. By the time December arrives, residents and visitors are likely to experience the stark contrast of overcast skies and limited sun, with sunshine becoming increasingly rare as they transition from the relatively bright summer days to the gloomier winter season. This shift emphasizes the importance of embracing outdoor activities early in the year when the sunshine is much more plentiful.

Percentage of Sunny Days in December in Bay Harbor

The chart illustrates the percentage of sunny days in Bay Harbor 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 Bay Harbor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%19%40%36%49%44%52%52%52%34%28%14%
Data source: Bay Harbor December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bay Harbor in December

As the year winds down, December in Bay Harbor, United States, ushers in a significant shift in daylight duration, with only 8 hours of daylight. This gradual decline from the longer days of summer, when daylight peaked at 15 hours in June and July, signals the onset of winter. The trend reveals a steady decrease in sunlight as the months progress from the vibrant hues of spring and summer, peaking in May with 14 hours, to the brisk, shorter days of fall. By December, daylight lingers just a moment longer than the 9 hours that encompass the chilly months of November and January, inviting residents to embrace cozy evenings and the seasonal festivities that come with the darkest days of the year.

Average Daylight Hours in Bay Harbor for December

The chart illustrates the variation in daylight duration in Bay Harbor throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 10m10h 24m11h 57m13h 33m14h 54m15h 35m15h 12m13h 59m12h 28m10h 53m9h 29m8h 46m
Data source: Bay Harbor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bay Harbor

As December settles over Bay Harbor, the crisp winter air brings with it a noticeable uptick in wind speed, averaging 6.1 m/s (14 mph), the highest point of the year. This increase marks a shift from the more gentle breezes of summer and early fall, where wind speeds hovered around a calm 3.5 to 4.6 m/s (8 to 10 mph). The transition is particularly striking from November, which itself boasted 5.5 m/s (12 mph), suggesting a gradual buildup to the more robust gusts of winter. This trend of rising wind speeds not only invigorates the coastal landscape but also heralds the season's unique charm, making December a dynamic time in Bay Harbor as nature embraces the robustness of winter.

Average December Wind Speed in Bay Harbor

The chart displays monthly wind speed patterns in Bay Harbor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.65.05.54.64.13.83.53.64.64.15.56.1 m/s
Data source: Bay Harbor December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bay Harbor Compares to Other Months

The weather in Bay Harbor 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 Bay Harbor and find detailed weather information for every month.

December and January weather both reflect the chill of winter, but they come with distinct differences. In December, temperatures range from a minimum of -17°C (2°F) to a maximum of 14°C (57°F), with an average temperature of -2°C (29°F). This month experiences 91 mm (3.6 in) of precipitation over 17 days, while the humidity hovers around 87%. In contrast, January is even colder, with temperatures dipping to a minimum of -20°C (-4°F) and reaching a maximum of only 8°C (47°F), resulting in an average of -5°C (23°F). Precipitation decreases to 65 mm (2.6 in) over 14 days, and humidity rises slightly to 91%. For more detailed information, you can check out the Bay Harbor weather in January.

In December, temperatures in Bay Harbor range from a minimum of -17°C (2°F) to a maximum of 14°C (57°F), with an average of -2°C (29°F). The month experiences substantial precipitation, totaling 91 mm (3.6 in) over 17 days, accompanied by high humidity levels at 87%. Conversely, February typically sees slightly colder temperatures, with a minimum of -18°C (1°F) and a maximum of 10°C (51°F), resulting in an average of -5°C (23°F). Precipitation is somewhat less in February, totaling 76 mm (3.0 in) over 16 days, and humidity also rises slightly to 91%. For further details, you can explore Bay Harbor weather in February.

December and March exhibit contrasting weather patterns despite having similar minimum temperatures of -17°C (2°F). In March, the average temperature rises slightly to -1°C (30°F), compared to -2°C (29°F) in December, marking a gradual transition toward spring. Additionally, March experiences warmer maximum temperatures, peaking at 17°C (63°F) as opposed to December's 14°C (57°F). Precipitation decreases in March to 63 mm (2.5 in) over 12 days, while December sees higher amounts of 91 mm (3.6 in) across 17 days. Notably, humidity remains constant in both months at 87%. For a detailed look at weather conditions in March, check out Bay Harbor weather in March.

In December, temperatures in Bay Harbor can plummet to a chilling minimum of -17°C (2°F), with an average of -2°C (29°F) and a maximum of 14°C (57°F). The month is marked by significant precipitation, totaling 91 mm (3.6 in) over 17 days, accompanied by high humidity at 87%. In contrast, April brings a noticeable warming trend, with minimum temperatures around -9°C (16°F), an average of 4°C (39°F), and a comfortable maximum reaching 20°C (68°F). Although April sees a slight increase in precipitation to 99 mm (3.9 in) over 14 days, the humidity remains consistent at 87%. This shift reflects the transition from the harsh winter conditions of December to the milder spring climate of April. For more details about April weather, you can visit Bay Harbor weather in April.

December and May present a striking contrast in weather conditions. In December, temperatures can plummet to a minimum of -17°C (2°F), with an average temperature around -2°C (29°F) and a maximum reaching 14°C (57°F). The month is characterized by higher humidity at 87% and notable precipitation, accumulating to 91 mm (3.6 in) over 17 days. In contrast, May experiences significantly warmer temperatures, with a minimum of -2°C (29°F), an average of 10°C (49°F), and a maximum soaring to 29°C (84°F). Although May has slightly more total precipitation at 108 mm (4.3 in), it falls over fewer days (11 days) and boasts lower humidity at 82%. For a closer look at weather specifics, check out Bay Harbor weather in May.

December and June present stark contrasts in weather patterns. December features a minimum temperature of -17°C (2°F) and an average of -2°C (29°F), with a maximum of 14°C (57°F), creating a cold and wintry atmosphere. The month sees considerable precipitation, amounting to 91 mm (3.6 in) over 17 days, accompanied by high humidity at 87%. In contrast, June brings a much warmer climate with a minimum temperature of 4°C (39°F), an average of 16°C (60°F), and a maximum of 28°C (82°F). This summer month experiences slightly higher precipitation at 103 mm (4.1 in) spread over 12 days, but the humidity is lower at 79%. For a closer look at what to expect, you can check out the detailed overview of Bay Harbor weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures can drop as low as -17°C (2°F), with an average of -2°C (29°F) and a maximum of 14°C (57°F), highlighting the winter chill. This month experiences significant precipitation over 17 days, resulting in an average of 91 mm (3.6 in) and high humidity at 87%. Conversely, July enjoys milder temperatures, with a minimum of 12°C (53°F), an average of 20°C (68°F), and a maximum reaching 29°C (84°F). It also sees less rain, with only 89 mm (3.5 in) falling across just 9 days, and lower humidity levels at 75%. For more specific insights about July weather, check Bay Harbor weather in July.

December and August present strikingly different weather patterns. December is marked by frigid temperatures, with a minimum of -17°C (2°F) and an average around -2°C (29°F), leading to chilly, damp conditions with high humidity at 87%. The month experiences 91 mm (3.6 in) of precipitation over 17 days, creating a wintry atmosphere. In contrast, August enjoys milder temperatures, with a minimum of 10°C (50°F) and an average of 20°C (68°F), peaking at a comfortable 28°C (83°F). It sees slightly higher precipitation at 97 mm (3.8 in) over just 10 days, but lower humidity at 76%, contributing to a more pleasant, summer-like feel. For more details on the warm conditions of August, visit Bay Harbor weather in August.

When comparing the weather in December and September, a stark contrast becomes evident. December experiences much colder temperatures, with lows reaching -17°C (2°F) and an average of -2°C (29°F), while September boasts a much milder climate, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 28°C (82°F). Precipitation levels are similar, with December receiving 91 mm (3.6 in) over 17 days and September slightly less at 90 mm (3.5 in) over 12 days. Additionally, December's humidity is higher at 87%, compared to September's 79%. For a closer look at the weather specifics in September, visit Bay Harbor weather in September.

In comparing the weather of December and October, notable differences emerge. December experiences significantly colder temperatures, with a minimum of -17°C (2°F) and an average of -2°C (29°F), whereas October offers milder conditions, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 24°C (75°F). Additionally, October sees more rainfall, with total precipitation of 159 mm (6.3 in) over 18 days, compared to December's 91 mm (3.6 in) spread over 17 days. Humidity levels are relatively close, with December at 87% and October at 83%. For a detailed look at the October conditions, you can visit Bay Harbor weather in October.

In comparing the weather patterns of December and November, December generally experiences colder temperatures, with a minimum of -17°C (2°F) and an average of -2°C (29°F), compared to November's milder minimum of -13°C (10°F) and average of 3°C (37°F). Additionally, December has a maximum temperature that peaks at 14°C (57°F), while November sees a higher maximum of 21°C (70°F). Precipitation levels are similar, with December receiving 91 mm (3.6 in) over 17 days and November experiencing 97 mm (3.8 in) across 18 days. Humidity remains relatively consistent, with December at 87% and November slightly lower at 86%. For a more detailed look, you can check Bay Harbor weather in November.

Compare Bay Harbor's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bay Harbor

As December settles over Bay Harbor, the weather takes a notable turn compared to the milder months preceding it. With temperatures plunging to cold lows and averaging well below freezing, residents and visitors alike must prepare for the chill. The landscape transforms with increased precipitation, resulting in a significant rise in the number of wet days, often leading to a grey, damp atmosphere that characterizes late fall. The high humidity adds an unmistakable chill to the air, making it essential to bundle up and embrace the seasonal charm. For a deeper understanding of how December fits into the bigger picture of Bay Harbor's climate, check out Bay Harbor Climate.