December Weather in Edgartown, United States

Last updated: February 24, 2025

In Edgartown, United States, December brings a chilly embrace as temperatures range from a maximum of 16°C (61°F) to a frigid minimum of -12°C (11°F), with an average hovering around 4°C (40°F). This month is also marked by considerable precipitation, totaling 129 mm (5.1 in) over approximately 11 days, contributing to a humidity level of 80% that keeps the air crisp and invigorating. Whether you're strolling through the historic streets or enjoying the serene waterfront, December's weather in Edgartown offers a unique blend of seasonal beauty and coastal charm.

December Temperature in Edgartown

As December blankets Edgartown in its winter chill, temperatures reflect a transition into colder months. With minimum temperatures dipping to -12°C (11°F) and a modest average of 4°C (40°F), the coastal town experiences a significant drop from the milder autumn days. However, the maximum highs reaching 16°C (61°F) provide moments of respite, hinting at the warmth lying just ahead in the coming spring. This month is characterized by a gradual decrease in temperatures compared to November, setting the stage for the winter season that looms ahead. The stark contrast between the chilly lows and moderate highs creates a unique atmosphere, perfect for cozying up indoors or enjoying brisk outdoor walks along the picturesque shoreline.

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

The chart illustrates December temperature patterns in Edgartown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353638465463717267604940
Data source: Temperature data for Edgartown 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 Edgartown

In December, Edgartown experiences a notable uptick in precipitation, with 129 mm (5.1 in) of rain falling over approximately 11 days. This marks a significant increase compared to the drier summer months, where precipitation dipped to 84 mm (3.3 in) in July. The transition into winter months brings a steady rhythm of rain, as December follows November’s 103 mm (4.0 in), showcasing the town's shift from fall to winter weather patterns. While the precipitation amount this month is slightly less than the peak seen in October, it still maintains a robust presence, contributing to the overall annual rainfall total. This trend highlights the region’s varied climate and the necessity for residents to adapt to the wetter days that precede the colder season.

December Precipitation Trends in Edgartown

The chart displays monthly precipitation patterns in Edgartown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec93118116134119908486117168103129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Edgartown

As winter sets in, December in Edgartown, United States, brings a humidity level of 80%, which is consistent with the 80% experienced in November. This marks a significant shift from the drier summer months, where humidity dipped to a comfortable 75% from September through October. As we move towards the colder season, it’s evident that moisture levels tend to rise, with winter months like January and February lingering at 84% humidity. This clear seasonal trend underscores Edgartown’s distinctive climate, moving from the relatively balanced humidity of spring and summer to the wetter atmosphere typical of later fall and winter.

December Average Humidity in Edgartown

This chart illustrates the average monthly humidity levels in Edgartown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Edgartown

As December rolls into Edgartown, the UV Index takes a notable dip, settling at a low level of 2. This signifies a shift in the seasonal sun exposure, providing residents and visitors with an extended burn time of 45 minutes before the risk of harm begins to increase. This contrasts sharply with the intense very high levels seen in the summer months, where the index reached as high as 10 in June. Throughout the year, Edgartown experiences a gradual transition from moderate UV exposure in early winter to much higher levels in the sunnier months of late spring and summer. As the festivities of the season unfold, it’s crucial to remain mindful of UV exposure, even in the colder months; for detailed insights on daily UV levels, check out Edgartown UV Index.

Maximum UV Index Levels in Edgartown for December

The chart shows the monthly maximum UV Index (UVI) for Edgartown 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.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998642
Data source: Edgartown 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 Edgartown

As the year winds down, December in Edgartown brings a gentle reminder of the fading sunshine, with approximately 165 hours of daylight. This marks a notable decrease as the days get shorter, following a peak in the sunny months of July and June, where residents enjoyed over 340 hours of radiant sun. Interestingly, the transition into winter sees a gradual decline in sunlit hours from the vibrant days of May and June, highlighting a consistent seasonal pattern. While December's sunlight is less abundant than the summer months, it still offers a cozy charm, inviting the community to embrace the brisk weather and the festive spirit that accompanies the season.

Monthly Sunshine Duration in Edgartown: December Highlighted

The December sunshine duration represents the total number of hours Edgartown 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.
JanFebMarAprMayJunJulAugSepOctNovDec142h184h258h243h298h326h346h330h280h236h203h165h
Data source: Edgartown December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Edgartown During December

In December, Edgartown experiences a notably lower chance of sunny weather, with only a 29% likelihood of clear skies. This trend reflects a consistent decrease in sunshine compared to the preceding months, where November offers a more promising 54% chance. As the year transitions from autumn to winter, the probability of sunny days diminishes sharply, aligning with the seasonal shift. Notably, while March boasts the highest likelihood at 60%, the winter months tend to trap more cloud cover, leaving December among the gloomiest. The overall pattern indicates that if you're hoping for bright days in Edgartown during December, you'll likely need to be prepared for a fair amount of cloudiness.

Percentage of Sunny Days in December in Edgartown

The chart illustrates the percentage of sunny days in Edgartown 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 Edgartown experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%31%60%46%41%38%41%36%50%45%54%29%
Data source: Edgartown December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Edgartown in December

As the year comes to a close in Edgartown, December brings a sense of tranquility with only 9 hours of daylight. This duration mirrors the shorter days of November, creating a period where the charm of winter settles in. Following a steady increase in daylight from the winter depths of January through the blooming promise of spring in April and May, the summer months peak at a vibrant 15 hours. By August, daylight begins its gradual decline, offering a gentle reminder of the cyclic nature of the seasons. The stark contrast between the long, sunlit days of June and the brief, cozy daylight of December highlights the serene beauty of winter, inviting residents and visitors alike to embrace the magic of the season.

Average Daylight Hours in Edgartown for December

The chart illustrates the variation in daylight duration in Edgartown throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 32m10h 36m11h 58m13h 21m14h 32m15h 7m14h 48m13h 45m12h 25m11h 2m9h 49m9h 12m
Data source: Edgartown daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Edgartown

As December settles in Edgartown, the wind begins to whisper slightly softer secrets, with an average speed of 6.4 m/s (14 mph). This marks a subtle decline from the months prior, reflecting a seasonal shift as the gusty winds of late autumn taper off. Throughout the year, wind speeds peaks in the winter months, averaging around 6.8 m/s (15 mph) in January, February, and March. However, as we transition into the heart of winter, winds become gentler, suggesting a calm before the harsher storms of January. This trend hints at a cozy, serene feel to the island's December, where the winds invite a reflective pause amid the holiday bustle.

Average December Wind Speed in Edgartown

The chart displays monthly wind speed patterns in Edgartown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.86.76.86.56.16.15.24.95.96.66.66.4 m/s
Data source: Edgartown December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Edgartown Compares to Other Months

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

December typically features a milder climate than January, with average temperatures ranging from a minimum of -12°C (11°F) to a maximum of 16°C (61°F). In contrast, January experiences cooler temperatures, with lows reaching -16°C (4°F) and highs peaking at 13°C (55°F). Additionally, December brings more significant precipitation, averaging 129 mm (5.1 in) over 11 days, compared to January's 93 mm (3.7 in) over 9 days. Humidity levels also rise slightly in January, reaching 84% compared to December's 80%. For more information on winter weather patterns, you can check Edgartown weather in January.

December and February have striking similarities in their weather patterns, but also some notable differences. Both months experience minimum temperatures around -12°C (11°F), but February tends to be slightly cooler on average, with temperatures peaking at 12°C (53°F) compared to December's 16°C (61°F). Precipitation levels are similar, with December receiving 129 mm (5.1 in) over 11 days and February slightly lower at 118 mm (4.6 in) across 12 days. Humidity is also higher in February at 84%, compared to December's 80%. For more detailed insights into February weather, you can check out Edgartown weather in February.

In December, temperatures in Edgartown range from a chilly minimum of -12°C (11°F) to a maximum of 16°C (61°F), with an average of 4°C (40°F). The month experiences significant precipitation of 129 mm (5.1 in) over about 11 days, coupled with a humidity level of 80%. In contrast, March sees slightly milder temperatures, with a minimum of -9°C (17°F) and a maximum of 13°C (55°F), averaging around 3°C (38°F). Precipitation decreases to 116 mm (4.6 in) over 10 days, and humidity rises slightly to 82%. For more detailed information, visit Edgartown weather in March.

In December, temperatures can drop significantly, with a minimum of -12°C (11°F) and an average of around 4°C (40°F), contrasting with the milder April weather, where temperatures range from a minimum of 1°C (33°F) to an average of 8°C (46°F). Both months experience a similar maximum temperature of 16°C (61°F), but December sees more chill and potentially harsh conditions. Precipitation levels are comparable, with December receiving 129 mm (5.1 in) across 11 days and April slightly higher at 133 mm (5.3 in) over 12 days. Interestingly, humidity remains quite close in both months, hovering around 80% in December and 79% in April. For a detailed look at weather patterns during this spring month, check out Edgartown weather in April.

In December, temperatures can be quite chilly, ranging from a minimum of -12°C (11°F) to an average of 4°C (40°F) and peaking at 16°C (61°F). This month typically brings about 129 mm (5.1 in) of precipitation over 11 days, coupled with high humidity levels averaging 80%. In contrast, May offers a significantly warmer climate, with temperatures ranging from a minimum of 4°C (40°F) to an average of 12°C (54°F) and reaching a maximum of 20°C (67°F). Despite slightly lower precipitation at 119 mm (4.7 in) over 13 days, the humidity in May is lower, averaging 75%. For more insights into the pleasant weather of May, check out Edgartown weather in May.

December and June present strikingly different weather conditions. In December, temperatures can plummet to a minimum of -12°C (11°F), with an average of 4°C (40°F) and a maximum reaching 16°C (61°F). The month also sees considerable precipitation, totaling 129 mm (5.1 in) over approximately 11 days, combined with high humidity at 80%. In contrast, June boasts milder temperatures with a minimum of 11°C (52°F), an average of 17°C (63°F), and a maximum of 23°C (74°F). Precipitation in June is notably less, at 90 mm (3.5 in) over about 10 days, and humidity is slightly lower at 78%. For a more in-depth look at June weather in Edgartown, you can visit Edgartown weather in June.

In December, temperatures can drop significantly, with minimums reaching as low as -12°C (11°F) and average highs around 4°C (40°F). The month experiences a notable amount of precipitation, totaling 129 mm (5.1 in) across 11 days, coupled with high humidity levels of 80%. In contrast, July brings much warmer weather, with minimum temperatures of 16°C (61°F) and average highs peaking at 27°C (81°F). Precipitation decreases to 84 mm (3.3 in) over just 9 days, and humidity is slightly lower at 76%. This stark contrast highlights the seasonal variations, making July a much more temperate and enjoyable month. For further details, you can check Edgartown weather in July.

December and August present remarkably different weather conditions. In December, temperatures can drop as low as -12°C (11°F) with an average of 4°C (40°F), peaking at a mild 16°C (61°F). The month experiences high humidity at 80% and significant precipitation, totaling 129 mm (5.1 in) over approximately 11 days. In stark contrast, August offers a much warmer climate, with minimum temperatures around 17°C (63°F) and averages reaching 22°C (73°F), while maximum temperatures can soar to 26°C (80°F). The month sees less rainfall, with 86 mm (3.4 in) spread over about 9 days and a slightly lower humidity level at 76%. For a closer look at weather specifics, check out Edgartown weather in August.

December weather is marked by colder temperatures, averaging around 4°C (40°F) with nighttime lows plummeting to -12°C (11°F) and daytime highs reaching only 16°C (61°F). In contrast, September enjoys milder conditions, with temperatures ranging from a minimum of 14°C (57°F) to a comfortable average of 20°C (67°F) and maximums of 25°C (78°F). Precipitation levels are fairly similar in both months, with December receiving 129 mm (5.1 in) over 11 days and September accumulating 117 mm (4.6 in) over 10 days. Humidity also shows a slight difference, sitting at 80% in December compared to 75% in September.

For more details, you can check Edgartown weather in September.

In comparing the weather of December and October, we see notable differences in temperature and precipitation. December experiences colder temperatures, with a minimum of -12°C (11°F) and an average of 4°C (40°F), while October boasts much milder conditions, with a minimum of 4°C (39°F) and an average of 15°C (60°F). Precipitation is also significant in both months, but October has slightly higher rainfall at 168 mm (6.6 in) over 12 days compared to December's 129 mm (5.1 in) over 11 days. Additionally, December features higher humidity at 80%, compared to October's 75%. For more detailed insights, you can check Edgartown weather in October.

In December, the weather is characterized by cooler temperatures compared to November, with a minimum of -12°C (11°F) and an average of 4°C (40°F), whereas November experiences a milder minimum of -6°C (21°F) and an average of 9°C (49°F). The maximum temperatures in December reach 16°C (61°F), slightly lower than November's max of 19°C (67°F). Additionally, December sees increased precipitation, totaling 129 mm (5.1 in) over 11 days, compared to November's 103 mm (4.0 in) during 10 days. Both months share a humidity level of 80%, but December's cooler air brings a different feel to the overall weather. For more detailed insights into November's climate, check out Edgartown weather in November.

Compare Edgartown's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Edgartown

As December settles over Edgartown, the weather experiences a notable shift from the milder fall months. With temperatures dipping to chilling lows and frequent precipitation, this month ushers in a decidedly more wintry atmosphere. The average humidity remains high, contributing to a crisp, damp chill in the air that contrasts sharply with the warmer days of summer and autumn. Those venturing out will find the landscape transformed, yet the cozy charm of the town in the winter offers its own unique beauty. For a deeper understanding of Edgartown’s shifting climate throughout the year, visit Edgartown Climate.