December Weather in Seabrook Beach, United States

Last updated: February 24, 2025

December at Seabrook Beach, United States, presents a chilly maritime climate characterized by a wide range of temperatures. With a maximum peak of 15°C (59°F) and an average chilling down to 1°C (34°F), it’s essential to prepare for the minimum drop of an impressive -19°C (-1°F). This month also sees 133 mm (5.2 in) of precipitation over approximately 10 days, contributing to a palpable humidity level of 81%. Whether you're embracing the winter winds or cozying up indoors, December's weather promises a unique coastal experience.

December Temperature in Seabrook Beach

In December, Seabrook Beach experiences a notable shift as temperatures begin their descent into winter, with minimums dropping to -19°C (-1°F). The average temperature rests at a brisk 1°C (34°F), marking a stark contrast to the mildness experienced just months prior. Daytime highs reach up to 15°C (59°F), offering a brief respite from the cold. This month encapsulates the transition into winter, showcasing cooler extremes compared to the preceding months, particularly from November when temperatures were slightly milder. As the year draws to a close, the landscape transforms, highlighting the beauty of a coastal winter.

December Weather in Seabrook Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Seabrook Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303236465565717165554334
Data source: Temperature data for Seabrook Beach 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 Seabrook Beach

In December, Seabrook Beach experiences a notable increase in precipitation, with 133 mm (or 5.2 inches), making it one of the wetter months of the year. This rise aligns with the trend observed in the cooler months, where average precipitation tends to escalate. December also sees rain on 10 days, a pattern consistent with November's average, suggesting a continuation of damp conditions as the year draws to a close. Overall, the wet winter months contribute significantly to the yearly total, showcasing a seasonal shift that characterizes Seabrook Beach’s climate dynamics.

December Precipitation Trends in Seabrook Beach

The chart displays monthly precipitation patterns in Seabrook Beach, 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.
JanFebMarAprMayJunJulAugSepOctNovDec79989414383881237178143108133
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Seabrook Beach

In December, Seabrook Beach experiences a humidity level of 81%, slightly lower than the previous month but indicative of a trend toward more comfortable conditions as the year winds down. Following the peak humidity of 86% in January, levels gradually decrease until July, when they hit their lowest at 67%. August sees a slight uptick, but humidity remains relatively low until fall, when it rebounds to 84% in November. December’s humidity illustrates the seasonal shift towards drier air, creating a refreshing contrast to the higher levels faced earlier in the year, and setting the stage for a cozy winter by the sea.

December Average Humidity in Seabrook Beach

This chart illustrates the average monthly humidity levels in Seabrook Beach, 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%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Seabrook Beach

As winter settles in, December at Seabrook Beach is characterized by a low UV Index of 2, making it the perfect time for those looking to enjoy the outdoors with minimal sun exposure risk. This month, the burn time extends to 45 minutes, allowing for leisurely activities without the pressing concern of sunburn. Following a gradual rise in UV levels from January's low index, which starts the year at 2, the UV Index reaches its peak in May and June with values of 9 and 10, representing very high exposure. As the season progresses, UV levels slowly decline, providing a comfortable environment for outdoor enthusiasts in the quieter winter months. For detailed UV forecasts and to stay informed throughout the year, explore the resources available at Seabrook Beach UV Index.

Maximum UV Index Levels in Seabrook Beach for December

The chart shows the monthly maximum UV Index (UVI) for Seabrook Beach 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.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Seabrook Beach 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 Seabrook Beach

December in Seabrook Beach experiences a charming retreat from the sun-soaked months of summer, with 176 hours of sunshine setting the tone for a cozy holiday season. While this figure is a decrease from the vibrant 337 hours of sunshine enjoyed in August, it still offers a delightful backdrop compared to the gloomy winter months seen in many regions. As the year draws to a close, December’s sunshine reveals a gentle downward trend from the peak brightness of summer, yet it remains a significant source of warmth and light. This balance of sun and seasonal chill invites both locals and visitors to celebrate the beauty of winter on the beach, highlighting Seabrook’s unique ability to shine all year round.

Monthly Sunshine Duration in Seabrook Beach: December Highlighted

The December sunshine duration represents the total number of hours Seabrook Beach 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.
JanFebMarAprMayJunJulAugSepOctNovDec150h183h256h245h295h330h335h337h285h221h193h176h
Data source: Seabrook Beach December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Seabrook Beach During December

December in Seabrook Beach brings a notable dip in sunny weather, with just a 32% chance of clear skies. This trend reflects a general decline in sunshine hours as the year comes to a close. After experiencing a moderate rise in November, where the likelihood of sun peaked at 54%, December’s statistics align more closely with the summer months, particularly July and August, which also show lower probabilities of sunshine. As winter descends, the coastal charm of Seabrook Beach is overshadowed by cloudier days—making those rare sunny moments all the more precious.

Percentage of Sunny Days in December in Seabrook Beach

The chart illustrates the percentage of sunny days in Seabrook Beach 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 Seabrook Beach experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%35%61%40%38%40%32%32%44%38%54%32%
Data source: Seabrook Beach December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Seabrook Beach in December

As December arrives in Seabrook Beach, daylight dwindles to 9 hours, mirroring the shorter days of November. This trend of decreasing sunlight is part of a cyclical pattern, where the daylight duration gradually increases from 9 hours in winter's heart in January to a peak of 15 hours by June, the summer solstice. Following this high, daylight begins to recede again, demonstrating nature's rhythmic ebb and flow. As the year's end approaches, residents can anticipate a steady return of longer days starting in January, promising a gradual transition back to brighter moments in the upcoming months.

Average Daylight Hours in Seabrook Beach for December

The chart illustrates the variation in daylight duration in Seabrook Beach throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 31m11h 57m13h 26m14h 40m15h 18m14h 57m13h 51m12h 26m10h 58m9h 41m9h 2m
Data source: Seabrook Beach daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Seabrook Beach

In December, Seabrook Beach experiences a gentle shift in the winds, with an average speed of 4.6 m/s (10 mph), mirroring the breezy conditions prevalent in the preceding months of October and November. As the year winds down, the coastal winds remain steady, creating a refreshing backdrop for winter strolls along the shore. Notably, December's winds hold firm compared to the milder gusts of summer, which dipped to 3.3 m/s (7 mph) in August. This subtle uptick in wind speed reflects the seasonal transition and invites visitors to enjoy the invigorating sea air, encapsulating the unique charm of winter by the coast.

Average December Wind Speed in Seabrook Beach

The chart displays monthly wind speed patterns in Seabrook Beach, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.74.75.24.44.24.13.53.33.94.44.64.6 m/s
Data source: Seabrook Beach December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Seabrook Beach Compares to Other Months

The weather in Seabrook Beach 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 Seabrook Beach and find detailed weather information for every month.

In December, temperatures range from a minimum of -19°C (-1°F) to a maximum of 15°C (59°F), with an average temperature of around 1°C (34°F). The month sees significant precipitation, totaling 133 mm (5.2 in) over approximately 10 days, and the humidity is relatively high at 81%.

Conversely, January experiences slightly colder conditions, with average temperatures hovering around -1°C (30°F) and maximums reaching up to 17°C (64°F). Precipitation also decreases to 79 mm (3.1 in) over about 8 days, while humidity rises slightly to 86%. Overall, while both months exhibit cold weather, January tends to be a bit drier and slightly colder on average. For more details on January's climate, check out Seabrook Beach weather in January.

December and February share similar chilly characteristics, but February typically offers slightly milder conditions. In December, temperatures can drop as low as -19°C (-1°F), with an average of 1°C (34°F) and a maximum reaching up to 15°C (59°F). Precipitation is relatively high at 133 mm (5.2 in), occurring over about 10 days, with humidity around 81%. Conversely, February sees a minimum temperature of -16°C (4°F), an average of 0°C (32°F), and a maximum of 17°C (64°F). Precipitation decreases to 98 mm (3.9 in) across 11 days, and humidity rises slightly to 84%. Thus, February presents a colder yet drier atmosphere compared to the wetter and slightly warmer December. For more specific insight into February weather, you can visit Seabrook Beach weather in February.

December and March present a notable contrast in weather conditions, reflecting the transition from winter to early spring. In December, temperatures range from a chilly minimum of -19°C (-1°F) to a moderate maximum of 15°C (59°F), with an average temperature of 1°C (34°F). The month experiences substantial precipitation at 133 mm (5.2 inches) over about 10 days, coupled with relatively high humidity at 81%.

In contrast, March sees slightly milder temperatures, with minimums around -14°C (8°F) and maximums reaching 17°C (63°F), resulting in an average of 2°C (36°F). Precipitation decreases to 94 mm (3.7 inches) over the same number of days, while humidity remains similar at 82%. For a more detailed look at the weather in Seabrook Beach during March, you can visit Seabrook Beach weather in March.

When comparing the weather in December and April, notable differences emerge. December is characterized by colder temperatures, with minimums plunging to -19°C (-1°F) and an average of around 1°C (34°F). In contrast, April sees a significant warming trend, with minimum temperatures reaching a milder -2°C (29°F) and average highs of 8°C (46°F). Precipitation levels are somewhat similar, with December receiving 133 mm (5.2 in) over 10 days and April totaling 143 mm (5.6 in) across 13 days. Humidity remains relatively constant between the two months, with December at 81% and April slightly lower at 80%. For more detailed insights into April's weather conditions, check out Seabrook Beach weather in April.

December and May present contrasting weather conditions. In December, temperatures can plummet as low as -19°C (-1°F), with an average of 1°C (34°F) and a maximum of 15°C (59°F). Additionally, the month sees significant precipitation totaling 133 mm (5.2 in) over about 10 days, accompanied by high humidity of 81%. In contrast, May warms up considerably, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 27°C (82°F), and an average of 13°C (55°F). Precipitation decreases to 83 mm (3.3 in) across 11 days, while humidity levels drop to 72%. For those interested in experiencing pleasant spring weather, Seabrook Beach weather in May offers a delightful change from the chill of December.

December and June present a stark contrast in weather conditions. In December, temperatures can plummet to a minimum of -19°C (-1°F), with an average around 1°C (34°F) and a maximum of 15°C (59°F), accompanied by a considerable precipitation of 133 mm (5.2 in) over 10 days and a high humidity level of 81%. In contrast, June enjoys much milder temperatures, ranging from a minimum of 8°C (47°F) to an average of 18°C (65°F), with a peak reaching 30°C (86°F). The month also sees less precipitation at 88 mm (3.5 in) while maintaining a lower humidity of 72%. For a detailed look at June weather, visit Seabrook Beach weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures can drop to a chilling minimum of -19°C (−1°F), with an average of around 1°C (34°F) and a maximum reaching 15°C (59°F). The month is characterized by high humidity at 81% and frequent precipitation, totaling 133 mm (5.2 in) over about 10 days. In contrast, July boasts much milder temperatures, ranging from a minimum of 13°C (56°F) to a comfortable average of 22°C (71°F) and a peak of 31°C (88°F). While July sees slightly less precipitation at 123 mm (4.8 in) across 12 days, the humidity is lower at 67%, contributing to a more pleasant summer atmosphere. For more details on how the weather looks during this summer month, check out Seabrook Beach weather in July.

December and August present strikingly different weather conditions. In December, temperatures can plummet to a frigid minimum of -19°C (1°F), with an average of 1°C (34°F) and a maximum of 15°C (59°F). The month is characterized by significant precipitation, totaling 133 mm (5.2 in) over about 10 days, all while experiencing high humidity at 81%. In contrast, August boasts a much milder climate, with minimum temperatures around 13°C (55°F) and an average of 22°C (71°F), peaking at a pleasant 31°C (88°F). The month sees less precipitation at 71 mm (2.8 in) over 9 days, accompanied by lower humidity levels at 66%. For more details on August weather, visit Seabrook Beach weather in August.

December and September present starkly contrasting weather conditions. In December, temperatures can plunge to a chilling minimum of -19°C (1°F), with an average of 1°C (34°F) and a maximum reaching 15°C (59°F). The month is characterized by higher humidity levels at 81% and significant precipitation, totaling 133 mm (5.2 in) over about 10 days. In comparison, September enjoys milder temperatures, with a minimum of 7°C (46°F), an average of 18°C (65°F), and a pleasant maximum of 30°C (86°F). Precipitation in September is lighter, totaling 78 mm (3.1 in) over just 8 days, along with a lower humidity of 71%. For more specifics on September weather, you can visit Seabrook Beach weather in September.

When comparing the weather in December and October, it's clear that October offers a much milder climate. In December, temperatures can drop as low as -19°C (-1°F), while October experiences a minimum of 1°C (34°F) and an average temperature of 13°C (56°F), making it significantly warmer overall. Additionally, October enjoys maximum temperatures reaching up to 25°C (78°F), in stark contrast to December's maximum of only 15°C (59°F). Precipitation levels are relatively similar, with December receiving 133 mm (5.2 in) over approximately 10 days and October experiencing 142 mm (5.6 in) over 11 days. Humidity remains comparable as well, with December at 81% and October slightly lower at 78%. For more details about the conditions during October, you can check Seabrook Beach weather in October.

In comparing the weather of December to that of November, December tends to be colder overall, with average temperatures dropping from November's 6°C (43°F) to a mere 1°C (34°F). The minimum temperatures also illustrate a significant difference, plunging from November's -12°C (11°F) to December's -19°C (-1°F). Precipitation is slightly higher in December at 133 mm (5.2 in) over 10 days, compared to November's 108 mm (4.3 in) over 11 days. Humidity remains comparable, with December at 81% and November slightly higher at 84%. For more detailed insights, you can check Seabrook Beach weather in November.

Compare Seabrook Beach's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Seabrook Beach

December at Seabrook Beach presents a marked contrast to the milder months of the year, ushering in colder temperatures and a noticeable uptick in precipitation. As winter settles in, the once temperate beach environment transforms, with the average temperature dipping significantly, while the chilly nights can plunge to near freezing. This month typically sees a higher humidity level and frequent rain showers, making it one of the wetter periods. Despite these conditions, December's charm lies in its quiet beauty and the tranquil atmosphere that envelops the coastline. For a deeper dive into the seasonal variations, visit Seabrook Beach Climate.