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December Weather in Manhattan, United States

Last updated: June 24, 2025

In December, the average temperature in Manhattan, United States hovers around -5°C (23°F). Expect a chilly range, with minimums plunging to -24°C (-11°F) and maximums reaching a mild 15°C (60°F). Throughout the month, you'll encounter around 30 mm (1.2 in) of precipitation spread over 9 days, accompanied by a high average humidity of 94%, creating a truly brisk atmosphere.

December Temperature in Manhattan

In December in Manhattan, the average temperature is -5°C (23°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -24°C (-11°F). It's essential to pack warm clothing if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Manhattan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manhattan, December typically has an average temperature of -5°C (23°F), with highs reaching up to 15°C (60°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec211931384959686656403023
Data source: Temperature data for Manhattan 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 Manhattan

In Manhattan in December, the precipitation amount is 30 mm (1.2 in) spread over a period of 9 days.

December Precipitation Trends in Manhattan

The chart displays monthly precipitation patterns in Manhattan, 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 Manhattan, December typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec245036708286263447523730
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Manhattan

In Manhattan in December, humidity is 94%. With an average temperature of -5°C (23°F), this humidity feels like a chilling dampness that seeps into your bones, making travel uncomfortable and requiring extra layers to combat the biting cold.

December Average Humidity in Manhattan

This chart illustrates the average monthly humidity levels in Manhattan, 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 Manhattan is approximately 94%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Manhattan

In Manhattan 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 Manhattan, you can visit Hourly UV Index in Manhattan.

Maximum UV Index Levels in Manhattan for December

The chart shows the monthly maximum UV Index (UVI) for Manhattan 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 Manhattan typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578111110108642
Data source: Manhattan 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 Manhattan Compares to Other Months

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

This table compares monthly weather conditions in Manhattan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)24 mm (0.9 inches)93%moderate
February Weather-7°C (19°F)50 mm (2.0 inches)92%moderate
March Weather0°C (31°F)36 mm (1.4 inches)89%high
April Weather3°C (38°F)70 mm (2.8 inches)83%very high
May Weather9°C (49°F)82 mm (3.2 inches)79%extreme
June Weather15°C (60°F)86 mm (3.4 inches)76%extreme
July Weather20°C (68°F)26 mm (1.0 inches)74%very high
August Weather19°C (66°F)34 mm (1.3 inches)69%very high
September Weather14°C (57°F)47 mm (1.8 inches)67%very high
October Weather4°C (40°F)52 mm (2.0 inches)72%high
November Weather-1°C (31°F)37 mm (1.5 inches)89%moderate
December Weather-5°C (23°F)30 mm (1.2 inches)94%low

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