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December Weather in Westhampton, United States

Last updated: June 24, 2025

In December, the average temperature in Westhampton, United States hovers around 5°C (42°F), with a minimum dipping to -8°C (17°F) and a maximum peaking at 17°C (63°F). Expect a fair amount of rain, with 134 mm (5.3 in) of precipitation spread over 11 days. The atmosphere is notably humid, with an average humidity level of 80%.

December Temperature in Westhampton

In December in Westhampton, the average temperature is 5°C (42°F), with a maximum that can reach 17°C (63°F) and a minimum that can drop as low as -8°C (17°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates December temperature patterns in Westhampton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westhampton, December typically has an average temperature of 5°C (42°F), with highs reaching up to 17°C (63°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec373841485767757569615042
Data source: Temperature data for Westhampton 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 Westhampton

In Westhampton in December, the precipitation amount is 134 mm (5.3 in) spread over 11 days.

December Precipitation Trends in Westhampton

The chart displays monthly precipitation patterns in Westhampton, 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. In Westhampton, December typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec81107106122117681009887139102134
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Westhampton

In Westhampton in December humidity is 80%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that can seep into your bones, making outdoor adventures uncomfortable and urging travelers to seek warm shelter often.

December Average Humidity in Westhampton

This chart illustrates the average monthly humidity levels in Westhampton, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Westhampton is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Westhampton

In Westhampton in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Westhampton, you can visit Hourly UV Index in Westhampton.

Maximum UV Index Levels in Westhampton for December

The chart shows the monthly maximum UV Index (UVI) for Westhampton 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. In December, the maximum UV index in Westhampton typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Westhampton 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.

How December Weather in Westhampton Compares to Other Months

Weather in Westhampton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Westhampton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Westhampton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)81 mm (3.2 inches)84%moderate
February Weather3°C (38°F)107 mm (4.2 inches)82%moderate
March Weather5°C (41°F)106 mm (4.2 inches)81%high
April Weather9°C (48°F)122 mm (4.8 inches)78%very high
May Weather14°C (57°F)117 mm (4.6 inches)69%very high
June Weather19°C (67°F)68 mm (2.7 inches)69%very high
July Weather24°C (75°F)100 mm (3.9 inches)62%very high
August Weather24°C (75°F)98 mm (3.8 inches)65%very high
September Weather21°C (70°F)87 mm (3.4 inches)68%very high
October Weather16°C (62°F)139 mm (5.5 inches)74%high
November Weather10°C (50°F)102 mm (4.0 inches)82%moderate
December Weather5°C (42°F)134 mm (5.3 inches)80%low

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