December Weather in Westport, United States

Last updated: February 24, 2025

December in Westport, United States, is characterized by a chilly climate, with maximum temperatures reaching 14°C (57°F) and dipping to a minimum of -3°C (27°F). The average temperature sits at a brisk 6°C (44°F), inviting cozy indoors and warm layers for outdoor adventures. This month sees considerable precipitation, totaling 231 mm (9.1 in) over 19 days, resulting in a humid atmosphere at 87% that underscores the wintery charm of the region. Embrace the season's beauty as Westport transforms into a picturesque, albeit damp, winter haven.

December Temperature in Westport

As December rolls into Westport, temperatures begin to mirror the chill of winter, with average highs of around 14°C (57°F) and lows dipping to -3°C (27°F). This month marks a transitional phase, where the crisp air often invites the charm of holiday festivities. While it may not be the coldest month, the slight decrease in average temperatures from November sets the stage for the eventual deep freeze of January. Visitors and residents alike can expect to don warmer layers, enjoying the brisk, refreshing atmosphere while preparing for the cozy indoor warmth that the season brings. Embrace the seasonal change as December wraps Westport in its cool embrace, offering a beautiful blend of frosty mornings and milder afternoons.

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

The chart illustrates December temperature patterns in Westport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444346505459616260534843
Data source: Temperature data for Westport generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Westport

December in Westport brings a significant amount of rainfall, with 231 mm (9.1 in) of precipitation spread over 19 days. This positions December as one of the wetter months, closely following November, which recorded 267 mm (10.5 in). Notably, the trend shows a peak in precipitation during the late fall and early winter months, where both November and December significantly outpace the drier summer months, like July and August, which see only about 13 mm (0.5 in) each. As the year comes to a close, Westport residents can expect the skies to open up, setting a reflective, cozy atmosphere as the community wraps up the year amidst the frequent showers.

December Precipitation Trends in Westport

The chart displays monthly precipitation patterns in Westport, 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.
JanFebMarAprMayJunJulAugSepOctNovDec25917315813966581312106173267231
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Westport

As December rolls in Westport, the humidity levels reach their peak at 87%, marking a notable trend as the year wraps up. This increase follows a seasonal pattern where humidity typically hovers around the higher end of the spectrum during the winter months. After experiencing a gradual decline from a summer low of 73% in August, moisture levels see a significant rise in late autumn, paired with November's 86%. The consistent humidity throughout the year, oscillating between the 73% in the summer and 87% in the winter, reflects Westport's coastal climate, creating a rich and atmospheric environment during the chilly holiday season.

December Average Humidity in Westport

This chart illustrates the average monthly humidity levels in Westport, 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 Westport

As December rolls in, Westport experiences a significant drop in the UV Index, reaching a low of 1. This change indicates a notable shift from the peak summer months, where the index consistently soared to 9, signaling extreme UV exposure and a hastened burn time of just 15 minutes. In contrast, December offers a more forgiving environment, allowing for 45 minutes of safe sun exposure before a burn may occur. The gradual decline observed from the high summer months through fall highlights nature's seasonal rhythm, reminding residents to adapt their sun safety practices accordingly. For more detailed insights on UV levels throughout the year, explore Westport UV Index.

Maximum UV Index Levels in Westport for December

The chart shows the monthly maximum UV Index (UVI) for Westport 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.
JanFebMarAprMayJunJulAugSepOctNovDec235699987531
Data source: Westport 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 Westport

In Westport, United States, December offers a gentle farewell to the year, showcasing 105 hours of sunshine. While this is a noticeable drop from the sun-drenched peaks of July and June, which bask in 359 and 328 hours respectively, it still reflects a significant contrast to the gloomy early months. As the year progresses, sunshine hours notably increase from just 87 hours in January, peaking in the vibrant warmth of late spring and summer. This trend of rising sun hours reaches its zenith in May, with an impressive 305 hours, before tapering off into fall and winter. December's 105 hours invite the community to embrace the softer sunlight, perfect for cozy gatherings and holiday cheer, even as the days grow shorter.

Monthly Sunshine Duration in Westport: December Highlighted

The December sunshine duration represents the total number of hours Westport 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.
JanFebMarAprMayJunJulAugSepOctNovDec87h137h218h238h305h328h359h329h262h205h130h105h
Data source: Westport December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Westport During December

As December rolls into Westport, the likelihood of sunny weather stands at a modest 16%, slightly higher than the dismal 13% seen in both January and November. This time of year signals a shift in patterns, as daylight fades and clouds gather, reflecting a notable decline in sunshine compared to the peak months of spring and summer, which boast probabilities of 42%. Intriguingly, while the winter months are generally characterized by limited sunlight, December still holds a semblance of hope for some clearer days, hinting at the gradual transition towards brighter weather as the seasons change.

Percentage of Sunny Days in December in Westport

The chart illustrates the percentage of sunny days in Westport 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 Westport experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec13%18%30%43%32%42%42%36%32%26%13%16%
Data source: Westport December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Westport in December

As winter descends upon Westport, December brings a familiar chill and a return to shorter days, with daylight lasting just 8 hours. This pattern reflects a gradual decline that begins after the peak of summer, when daylight reaches a maximum of 15 hours from June through August. As the year progresses toward winter, daylight hours taper off, dipping to 9 hours in November before hitting the year's low in December. This cyclical trend highlights the long nights that characterize the season, creating a striking contrast with the longer, sunlit days of spring and summer. In the heart of winter, Westport embraces the cozy ambiance that shorter days bring, setting the stage for festive celebrations and reflective evenings.

Average Daylight Hours in Westport for December

The chart illustrates the variation in daylight duration in Westport throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 59m10h 18m11h 57m13h 38m15h 5m15h 48m15h 24m14h 6m12h 29m10h 48m9h 19m8h 33m
Data source: Westport daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Westport

As December unfolds in Westport, the average wind speed settles at 3.7 m/s (8 mph), mirroring the breezy conditions seen in March and October. The wind dances through the town, bringing a refreshing chill that contrasts with the fleeting warmth of late autumn. Interestingly, December’s winds are a notch below the 4.1 m/s (9 mph) experienced in both February and November, showcasing a slight decrease as winter approaches. This trend indicates a general ebb in wind intensity leading into the heart of winter, creating a serene atmosphere ideal for cozying up indoors and enjoying the festive spirit. Despite this softness in December's gales, the consistent patterns of moderate wind throughout the year suggest that Westport remains a lively haven, with gentle breezes guiding its winter tales.

Average December Wind Speed in Westport

The chart displays monthly wind speed patterns in Westport, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.64.13.62.63.22.93.53.13.03.74.13.7 m/s
Data source: Westport December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Westport Compares to Other Months

The weather in Westport 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 Westport and find detailed weather information for every month.

In December, the weather features a minimum temperature of -3°C (27°F) and an average of 6°C (44°F), with a maximum reaching 14°C (57°F). The month experiences significant precipitation, totaling 231 mm (9.1 in) over 19 days, accompanied by a high humidity level of 87%. In contrast, January sees slightly cooler temperatures, with a minimum of -5°C (24°F) and an average of 7°C (44°F), but maintains the same maximum of 14°C (57°F). Precipitation increases to 259 mm (10.2 in) across 17 days, while humidity remains relatively stable at 86%. For detailed insights on January weather patterns, visit Westport weather in January.

In comparing the weather of December and February, we find some similarities and distinctions. Both months experience a minimum temperature of -3°C (27°F) and an average temperature around 6°C, with February slightly warmer at an average of 6°C (43°F). The maximum temperatures are comparable as well, with December reaching up to 14°C (57°F) and February slightly higher at 15°C (60°F). However, precipitation levels differ; December sees more rain with 231 mm (9.1 in) over 19 days, while February has less, totaling 173 mm (6.8 in) over 18 days. Humidity is also slightly lower in February at 84%, compared to 87% in December. For a more detailed overview, check out Westport weather in February.

December and March present contrasting weather patterns, with December generally colder and wetter. In December, temperatures range from a chilly -3°C (27°F) to a milder maximum of 14°C (57°F), accompanied by significant precipitation of 231 mm (9.1 in) over 19 days, resulting in a high humidity level of 87%. In contrast, March offers a slight increase in temperatures, with a minimum of -1°C (30°F) and a maximum reaching 23°C (74°F), while precipitation drops to 158 mm (6.2 in) over 17 days and humidity remains slightly lower at 85%. For more details on weather patterns during this time, you can check Westport weather in March.

In December, the weather is notably colder, with temperatures ranging from a chilly -3°C (27°F) to a milder high of 14°C (57°F). The month experiences significant precipitation, with an average of 231 mm (9.1 in) over 19 days, and a high humidity level of 87%. In contrast, April brings a more moderate climate, with temperatures ranging from a minimum of 1°C (35°F) to a pleasant maximum of 27°C (80°F). Precipitation is lighter in April, totaling around 139 mm (5.5 in) over 15 days, accompanied by slightly lower humidity at 83%. For more details about April weather, you can visit Westport weather in April.

In December, the weather is quite chilly, with temperatures ranging from a minimum of -3°C (27°F) to a mild maximum of 14°C (57°F), averaging around 6°C (44°F). This month experiences significant precipitation, averaging 231 mm (9.1 in) over 19 days, coupled with high humidity at 87%. In contrast, May brings a much warmer and drier climate, with temperatures ranging from a low of 5°C (42°F) to a high of 29°C (85°F), averaging 12°C (55°F). Rainfall decreases to 66 mm (2.6 in) across 10 days, and humidity drops slightly to 84%. For more detailed insights into the weather during this month, you can check Westport weather in May.

December and June present stark contrasts in weather patterns. In December, temperatures range from a chilly -3°C (27°F) to a mild 14°C (57°F), with an average of 6°C (44°F). This month is quite wet, receiving 231 mm (9.1 in) of precipitation over 19 days, coupled with high humidity at 87%. In contrast, June sees significantly warmer temperatures, with a minimum of 7°C (44°F) and a maximum soaring up to 40°C (104°F), averaging 15°C (59°F). The precipitation drops to 58 mm (2.3 in) over just 8 days and humidity remains relatively high at 84%. For more detailed insights into the summer climate, check out Westport weather in June.

In December, the weather is characterized by much colder temperatures, with a minimum of -3°C (27°F) and an average of 6°C (44°F), reaching a maximum of 14°C (57°F). This month also sees significant precipitation, totaling 231 mm (9.1 in) over 19 days, accompanied by high humidity levels averaging 87%. In contrast, July offers a warmer climate with minimum temperatures around 10°C (51°F) and an average of 16°C (61°F), peaking at 28°C (82°F). Rain is relatively rare in July, with only 13 mm (0.5 in) falling over just 3 days, and humidity is slightly lower at 82%. For more detailed insights on July's weather, you can check out Westport weather in July.

Comparing December and August weather reveals striking differences in temperature and precipitation. December is characterized by a colder climate with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (57°F), accompanied by high humidity at 87% and frequent precipitation, with 231 mm (9.1 in) falling over 19 days. In contrast, August boasts much warmer conditions, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 32°C (90°F). This summer month enjoys considerably less rainfall, only 12 mm (0.5 in) over just 3 days, and a lower humidity level of 73%. For a closer look at August weather, visit Westport weather in August.

In December, the weather is significantly colder, with average temperatures ranging from a chilly -3°C (27°F) at night to a mild 14°C (57°F) during the day. This month also sees substantial precipitation, averaging 231 mm (9.1 in) over about 19 days, resulting in high humidity levels of 87%. In contrast, September boasts much warmer temperatures, with nighttime lows of 6°C (43°F) and daytime highs reaching 30°C (85°F), making it an ideal time for outdoor activities. Precipitation during September is notably lighter at 106 mm (4.2 in) over just 10 days, and humidity is lower, at 74%. For more details on September weather specifics, you can check Westport weather in September.

In comparing the weather of December to October, December is notably colder, with average temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (57°F). In contrast, October offers a milder climate, with temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 22°C (72°F). Additionally, December experiences more precipitation, accumulating 231 mm (9.1 in) over 19 days, while October records 173 mm (6.8 in) over just 13 days. November also sees a slightly higher humidity level in December at 87%, compared to October’s 83%. For a more detailed look at October weather, you can visit Westport weather in October.

December weather tends to be colder than November, with average temperatures dropping from 9°C (48°F) in November to 6°C (44°F) in December. The minimum temperatures also reflect this decline, decreasing from 0°C (33°F) in November to -3°C (27°F) in December. However, precipitation is slightly lower in December, standing at 231 mm (9.1 in) compared to November's 267 mm (10.5 in), even though the number of rainy days remains similar. Humidity levels are comparable, with December at 87% and November at 86%. For more details on November weather, you can check the following link: Westport weather in November.

Compare Westport's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Westport

As December arrives in Westport, the weather takes a distinct turn compared to other months, ushering in cooler temperatures and increased moisture. With a heightened average humidity of 87%, the crisp air feels more biting, especially as nighttime lows dip to around -3°C (27°F). This month also sees significant rainfall, accumulating a total of 231 mm across 19 days, making it one of the wetter times of the year. The transition from the milder months to the chill of December is palpable, inviting the cozy atmosphere of winter while creating a picturesque backdrop for holiday festivities. To learn more about Westport's weather patterns throughout the year, visit Westport Climate.