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May Weather in McMurdo Station, Antarctica

Last updated: August 22, 2025

In May, the average temperature in McMurdo Station, Antarctica hovers around -21°C (–6°F). Expect chilly extremes, with minimum temperatures plunging to -34°C (–29°F) and a maximum of -7°C (19°F). This wintery month sees a precipitation amount of 21 mm (0.8 in) spread over 7 days, while an average humidity of 69% adds to the frosty ambiance. Stay warm!

May Temperature in McMurdo Station

In May in McMurdo Station, the average temperature is -21°C (-6°F). Maximums can reach -7°C (19°F), and minimums can drop as low as -34°C (-29°F). Be prepared for extreme cold and dress warmly if you plan to travel during this time.

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

The chart illustrates May 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, May typically has an average temperature of -21°C (-6°F), with highs reaching up to -7°C (19°F) and lows dropping to around -34°C (-29°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.

May Precipitation in McMurdo Station

In McMurdo Station in May, the precipitation amount is 21 mm (0.8 in) over the course of 7 days.

May Precipitation Trends in McMurdo Station

The chart displays monthly precipitation patterns in McMurdo Station, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In McMurdo Station, May typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec152025122117142421191014
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in McMurdo Station

In McMurdo Station in May humidity is 69%. With an average temperature of -21°C (-6°F), this humidity feels like a biting chill that seeps into your bones, making travel outdoors not only uncomfortable but also potentially dangerous if you're not bundled up properly.

May Average Humidity in McMurdo Station

This chart illustrates the average monthly humidity levels in McMurdo Station, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in McMurdo Station is approximately 69%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in McMurdo Station

In McMurdo Station in May, the maximum UV index is 0, which corresponds to a low Exposure Category. The time to burn is approximately 45 minutes. For detailed information, you can check the Hourly UV Index in McMurdo Station.

Maximum UV Index Levels in McMurdo Station for May

The chart shows the monthly maximum UV Index (UVI) for McMurdo Station in May, 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 May, the maximum UV index in McMurdo Station typically reaches 0, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec642100012586
Data source: McMurdo Station May 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 May 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 May’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 May’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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