December Weather in Amagansett, United States

Last updated: February 24, 2025

December in Amagansett, United States, presents a chilly yet charming atmosphere as temperatures typically range from a brisk -9°C (16°F) at night to a maximum of 16°C (61°F) during the day. With an average temperature of 5°C (42°F), the month is characterized by moderate humidity levels of around 80%, creating a crisp winter air. Precipitation is frequent, with 12 days experiencing light to moderate rainfall, accumulating to 147 mm (5.8 in) for the month. This combination of cool temperatures and ample moisture makes December a unique time to explore the beauty of Amagansett's winter landscapes.

December Temperature in Amagansett

In December, Amagansett experiences a notable drop in temperatures as winter sets in, with minimums averaging -9°C (16°F). The cooler weather brings an average temperature of 5°C (42°F), illustrating a transition from the milder autumn months. Despite the chill, daytime highs can still reach up to 16°C (61°F), offering a mild reprieve during sunny spells. This month marks a significant shift from the warmer seasons, where temperatures gradually decline from November's average of 10°C (50°F). The contrast emphasizes the crispness typical of late fall, preparing the landscape for the deeper winter months ahead.

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

The chart illustrates December temperature patterns in Amagansett, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363739465464727368615042
Data source: Temperature data for Amagansett 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 Amagansett

In December, Amagansett experiences a noticeable uptick in precipitation, with an average of 147 mm (5.8 in) falling over 12 days. This marks a significant increase compared to the previous months, particularly when juxtaposed with the drier summer months of June and July which saw just 72 mm (2.9 in) and 99 mm (3.9 in) respectively. As the year comes to a close, the wet, wintry weather encapsulates the transition into colder months, hinting at the highest monthly precipitation recorded since October when 160 mm (6.3 in) were measured. This trend of increased rainfall in December not only enriches the local landscape but also prepares it for the impending chilly season.

December Precipitation Trends in Amagansett

The chart displays monthly precipitation patterns in Amagansett, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89123113137129729910399161113147
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Amagansett

In Amagansett, December wraps up the year with a humidity level of 80%, a slight increase from November's 80%. Throughout the colder months, from January to April, humidity remains relatively high, hovering around the 80-84% mark. As the temperatures rise into summer, a gradual decline begins, with May recording a low of 75%. This trend of decreasing humidity continues into the autumn months, indicating that Amagansett experiences its most humid conditions at the start of the year, progressively drying out as the seasons shift towards summer. The persistent humidity in December hints at the lingering chill of winter, setting a cozy atmosphere before the year comes to a close.

December Average Humidity in Amagansett

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

In December, Amagansett experiences a noticeable dip in UV Index levels, dropping to a low value of 2, which significantly extends the safe burn time to 45 minutes. This trend toward lower UV exposure is consistent with the winter months, contrasting sharply with the intense UV levels observed in the summer, where indexes soar to a maximum of 10. As the year winds down, so do the risks of sunburn, making December a more comfortable time for outdoor activities without the urgent need for sun protection. For more detailed insights, check out Amagansett UV Index.

Maximum UV Index Levels in Amagansett for December

The chart shows the monthly maximum UV Index (UVI) for Amagansett 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.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Amagansett 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 Amagansett

In Amagansett, December dances a delicate balance between the fading warmth of autumn and the cool embrace of winter, offering 177 hours of sunshine. This slightly lesser glow marks a transition from the peak sunbathing days of summer, where July basked in 349 hours of radiant brilliance. As the year progresses, sunlight gradually wanes, dipping from 321 hours in June to December’s more subdued offering, echoing the slow retreat of long summer days. Nevertheless, even amidst this decline, December's gentle light casts a serene charm over the landscape, inviting residents and visitors to savor the brisk air with the company of the sun's fleeting warmth.

Monthly Sunshine Duration in Amagansett: December Highlighted

The December sunshine duration represents the total number of hours Amagansett 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.
JanFebMarAprMayJunJulAugSepOctNovDec153h185h261h250h291h321h349h327h281h229h208h177h
Data source: Amagansett December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Amagansett During December

In December, Amagansett experiences a notably low likelihood of sunny weather, with a mere 32% chance of sunshine. This marks a significant dip compared to the more favorable conditions earlier in the year, particularly in March when sunny days peak at 59%. As the year winds down, the trend showcases a steady decline in sunshine probability, with December ranking among the months with the least sunny days, alongside February and August. Despite the holiday season's charm, residents and visitors alike should be prepared for overcast skies as winter fully settles in.

Percentage of Sunny Days in December in Amagansett

The chart illustrates the percentage of sunny days in Amagansett 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 Amagansett experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%31%59%49%46%41%45%35%49%46%53%32%
Data source: Amagansett December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Amagansett in December

In Amagansett, United States, December marks the transition into the winter months, where daylight lasts approximately 9 hours—a figure that mirrors both January and November. This continuation of reduced daylight follows a gradual decline from the summer's peak in June, when residents enjoy about 15 hours of sunlight. As the year progresses, daylight hours decrease, creating a rhythmic cycle that begins anew each spring. Interestingly, while December brings shorter days, it also sets the stage for the impending increase in daylight, promising longer, brighter moments in the months ahead. The annual ebb and flow of daylight not only shapes the local lifestyle but also enhances the appreciation for the sunlight as the year unfolds.

Average Daylight Hours in Amagansett for December

The chart illustrates the variation in daylight duration in Amagansett throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 58m13h 20m14h 29m15h 3m14h 44m13h 43m12h 24m11h 3m9h 52m9h 15m
Data source: Amagansett daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Amagansett

As December settles in Amagansett, the average wind speed drops slightly to 6.6 m/s (15 mph), reflecting a subtle transition into the winter months. This is consistent with a gradual decrease observed throughout the year, where the winds are strongest at the start of the year, particularly in January and February, both clocking in at 7.3 m/s (16 mph). As spring approaches, however, the winds begin to ease, ultimately reaching their lowest point in July and August. As the year winds down, December’s breezes remind us of the year’s earlier vigor, offering a gentle closure to the seasonal wind patterns while maintaining a refreshing, crisp air that characterizes this serene coastal town.

Average December Wind Speed in Amagansett

The chart displays monthly wind speed patterns in Amagansett, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.37.36.96.26.05.64.84.96.16.76.86.6 m/s
Data source: Amagansett December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Amagansett Compares to Other Months

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

December and January present contrasting yet notable weather conditions. In December, temperatures range from a minimum of -9°C (16°F) to a maximum of 16°C (61°F), with an average of 5°C (42°F) and a total precipitation of 147 mm (5.8 in) spread over 12 days. The month is characterized by relatively high humidity at 80%. Conversely, January sees a deeper chill, with minimum temperatures dropping to -13°C (8°F) and a slightly lower average of 2°C (37°F), peaking at 13°C (56°F). January also experiences reduced rainfall, with precipitation totaling 89 mm (3.5 in) over 9 days, accompanied by a marginally higher humidity of 84%. For more specific details on January conditions, you can check out Amagansett weather in January.

December and February display notable differences in weather patterns, though both months experience chilly temperatures. In December, temperatures range from a minimum of -9°C (16°F) to a maximum of 16°C (61°F), with an average of around 5°C (42°F). The month sees significant precipitation, totaling 147 mm (5.8 in) over approximately 12 days, and maintains a relatively high humidity of 80%. In contrast, February tends to be slightly colder, with temperatures dropping to a minimum of -12°C (11°F) and peaking at 12°C (53°F), averaging at 3°C (37°F). Precipitation is also a bit lower at 123 mm (4.8 in), occurring over about 11 days, and humidity increases to 84%. For more insights on February weather, check out Amagansett weather in February.

December and March present contrasting weather patterns despite their proximity in the calendar year. In December, temperatures range from a chilly minimum of -9°C (16°F) to a comfortable maximum of 16°C (61°F), with an average of 5°C (42°F). This month also sees a higher precipitation total of 147 mm (5.8 in) over 12 days, coupled with a humidity level of 80%. In comparison, March offers slightly milder conditions with a minimum of -7°C (20°F) and an average of 4°C (39°F), peaking at 15°C (59°F). Precipitation decreases to 113 mm (4.5 in) over 10 days, while humidity rises slightly to 82%. For more insights, check Amagansett weather in March.

In December, temperatures can drop significantly, with a minimum of -9°C (16°F) and an average of 5°C (42°F), while April enjoys milder conditions with a minimum temperature of 0°C (33°F) and an average of 8°C (47°F). Both months see a maximum of 16°C (61°F), providing a consistent upper limit for warm days. Precipitation levels are similar, with December experiencing 147 mm (5.8 in) and April slightly less at 137 mm (5.4 in), both distributed over around 12 days. Humidity levels are also comparable, with December at 80% and April at 79%, suggesting that while winter's chill lingers in December, April brings a refreshing transition towards spring. For more detailed insights, check out Amagansett weather in April.

In December, the weather can be quite cold, with temperatures ranging from a chilly -9°C (16°F) to a maximum of 16°C (61°F) and an average of 5°C (42°F). This month experiences notable precipitation, totaling 147 mm (5.8 in) over about 12 days, accompanied by high humidity at 80%. In contrast, May offers a much milder climate, with temperatures starting at a minimum of 4°C (39°F) and peaking at 20°C (69°F), averaging around 12°C (54°F). While May sees a slight decrease in precipitation to 129 mm (5.1 in) over 13 days, the humidity is somewhat less at 75%. For more detailed insights, check out Amagansett weather in May.

In December, temperatures can dip as low as -9°C (16°F), creating a significantly colder environment compared to June, where the minimum temperature is a milder 11°C (52°F). The average December temperature hovers around 5°C (42°F), while June enjoys a warmer average of 18°C (64°F) with highs reaching up to 24°C (75°F). Precipitation is also more prevalent in December, with 147 mm (5.8 in) over 12 days, contrasted with June's 72 mm (2.9 in) over just 8 days. Additionally, humidity levels are fairly similar, with December at 80% and June slightly lower at 78%. For more detailed insights into the June climate, you can visit Amagansett weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures can drop as low as -9°C (16°F) and typically average around 5°C (42°F), with a maximum of 16°C (61°F). The month sees considerable precipitation, totaling 147 mm (5.8 in) over approximately 12 days, coupled with a high humidity level of 80%. In contrast, July boasts much warmer temperatures, with a minimum of 16°C (61°F), an average of 22°C (72°F), and a maximum of 28°C (82°F). Precipitation in July is lower at 99 mm (3.9 in) spread across about 10 days, and humidity dips slightly to 76%. For more details on the pleasant conditions of July, check out Amagansett weather in July.

December and August present starkly contrasting weather patterns. In December, temperatures can plummet as low as -9°C (16°F), with an average of 5°C (42°F) and daytime highs reaching only 16°C (61°F). The month experiences significant precipitation of 147 mm (5.8 in) over about 12 days, combined with a high humidity level of 80%, creating a cold and damp atmosphere.

In contrast, August offers a much more temperate climate, with temperatures ranging from a minimum of 17°C (63°F) to an average of 23°C (73°F) and maximums reaching 27°C (80°F). Precipitation is lighter at 103 mm (4.0 in) over approximately 9 days, and humidity is slightly lower at 76%, making it a warmer and drier month. For more detailed insights into the summer climate, you can check Amagansett weather in August.

December and September exhibit striking contrasts in weather. In December, temperatures can drop as low as -9°C (16°F), with an average of 5°C (42°F) and a maximum of 16°C (61°F), making it significantly colder than September, where minimum temperatures are much milder at 12°C (55°F) and average highs reach 26°C (79°F). Additionally, December sees higher precipitation, totaling 147 mm (5.8 in) over 12 days, compared to September's 99 mm (3.9 in) over 10 days. The humidity also differs slightly, with December averaging 80% against September's 75%, creating a noticeably more humid and chillier atmosphere in the final month of the year. For detailed insights, you can check Amagansett weather in September.

In comparing the weather between October and December, October presents a distinctly milder climate, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 24°C (75°F) and an average of 16°C (61°F). In contrast, December experiences colder conditions, with temperatures plummeting to a minimum of -9°C (16°F) and an average of 5°C (42°F). Both months see a significant amount of precipitation, with October recording 160 mm (6.3 in) over 14 days and December slightly lower at 147 mm (5.8 in) over 12 days. Additionally, October has a lower humidity level of 75%, compared to December's higher humidity at 80%. For more detailed information on October weather, check out Amagansett weather in October.

In comparing the weather between November and December, December experiences colder temperatures with a minimum of -9°C (16°F) and an average of 5°C (42°F), while November has a milder minimum of -5°C (24°F) and an average of 10°C (50°F). Additionally, December sees a slight increase in precipitation, totaling 147 mm (5.8 in) over 12 days, compared to November's 113 mm (4.4 in) across 10 days. Both months maintain the same humidity level of 80%, but December's chill and increased rainfall contribute to a more wintry atmosphere. For a more detailed look at November's climate, you can visit Amagansett weather in November.

Compare Amagansett's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Amagansett

As December blankets Amagansett with its chill, the weather creates a distinct setting compared to the milder months. With an average temperature hovering around 5°C (42°F), the air carries a crispness that beckons cozy sweaters and steaming cups of cocoa. The frequent precipitation, falling on about 12 days of the month, contributes to a damp atmosphere often accompanied by increased humidity of 80%, making it feel even cooler. This wintry ambiance transforms the landscape, inviting both locals and visitors to embrace the unique charm of the season. Discover more about how December fits into the broader climate picture at Amagansett Climate.