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December Weather in McMurdo Station, Antarctica

Last updated: August 22, 2025

In December, the average temperature in McMurdo Station, Antarctica hovers around -5°C (23°F), with a range that can dip to a chilly -12°C (10°F) at its lowest and reach up to 1°C (33°F) at its warmest. Expect 14 mm (0.5 in) of precipitation spread over 3 days, and keep in mind the average humidity level is a brisk 78%. Stay warm and prepared for the elements!

December Temperature in McMurdo Station

In December in McMurdo Station, the average temperature is -5°C (23°F), with maximums reaching 1°C (33°F) and minimums dropping as low as -12°C (10°F). It's advisable to pack warm clothing and prepare for chilly conditions if you're planning to travel during this time.

December Weather in McMurdo Station: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in McMurdo Station, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McMurdo Station, December typically has an average temperature of -5°C (23°F), with highs reaching up to 1°C (33°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec23163-7-6-9-10-14-1201323
Data source: Temperature data for McMurdo Station 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 McMurdo Station

In McMurdo Station in December, the precipitation amount is 14 mm (0.5 in) over the course of 3 days.

December Precipitation Trends in McMurdo Station

The chart displays monthly precipitation patterns in McMurdo Station, 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 McMurdo Station, December typically receives around 14 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec152025122117142421191014
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in McMurdo Station

In McMurdo Station in December, humidity is 78%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that penetrates your clothes, making outdoor activities uncomfortable and necessitating extra layers to stay warm while exploring the area.

December Average Humidity in McMurdo Station

This chart illustrates the average monthly humidity levels in McMurdo Station, 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 McMurdo Station is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%79%75%71%69%73%70%70%67%73%76%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in McMurdo Station

In McMurdo Station in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in McMurdo Station, you can refer to this Hourly UV Index in McMurdo Station.

Maximum UV Index Levels in McMurdo Station for December

The chart shows the monthly maximum UV Index (UVI) for McMurdo Station 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 McMurdo Station typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec642100012586
Data source: McMurdo Station 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 McMurdo Station Compares to Other Months

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

This table compares monthly weather conditions in McMurdo Station, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)15 mm (0.6 inches)77%high
February Weather-9°C (16°F)20 mm (0.8 inches)79%moderate
March Weather-16°C (3°F)25 mm (1.0 inches)75%low
April Weather-22°C (-7°F)12 mm (0.5 inches)71%low
May Weather-21°C (-6°F)21 mm (0.8 inches)69%low
June Weather-23°C (-9°F)17 mm (0.7 inches)73%low
July Weather-24°C (-10°F)14 mm (0.5 inches)70%low
August Weather-25°C (-13°F)24 mm (0.9 inches)70%low
September Weather-24°C (-12°F)21 mm (0.8 inches)67%low
October Weather-18°C (0°F)19 mm (0.7 inches)73%moderate
November Weather-11°C (13°F)9 mm (0.4 inches)76%very high
December Weather-5°C (23°F)14 mm (0.5 inches)78%high

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