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May Weather in Columbia, United States

Last updated: June 24, 2025

In Columbia, United States, the average temperature for May is a cool 11°C (52°F). You can expect a range between a chilly -3°C (27°F) and a warm 30°C (87°F). With 104 mm (4.1 in) of precipitation spread over 13 days, you'll want to pack accordingly. The average humidity sits at a comfortable 78%, adding a touch of moisture to the air.

May Temperature in Columbia

In May in Columbia, the average temperature is 11°C (52°F), with maximums reaching 30°C (87°F) and minimums dropping as low as -3°C (27°F). Be prepared for a variety of weather conditions while enjoying your travels!

May Weather in Columbia: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Columbia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Columbia, May typically has an average temperature of 11°C (52°F), with highs reaching up to 30°C (87°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec151825385261666457453020
Data source: Temperature data for Columbia 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 Columbia

In Columbia in May, the precipitation amount is 104 mm (4.1 in) over the course of 13 days.

May Precipitation Trends in Columbia

The chart displays monthly precipitation patterns in Columbia, 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 Columbia, May typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8986781191041051181027513911195
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Columbia

In Columbia in May humidity is 78%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities somewhat uncomfortable and travel more challenging as you navigate the moist air.

May Average Humidity in Columbia

This chart illustrates the average monthly humidity levels in Columbia, 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 Columbia is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Columbia

In Columbia in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Columbia.

Maximum UV Index Levels in Columbia for May

The chart shows the monthly maximum UV Index (UVI) for Columbia 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 Columbia typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Columbia 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 Columbia Compares to Other Months

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

This table compares monthly weather conditions in Columbia, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)89 mm (3.5 inches)91%low
February Weather-8°C (18°F)86 mm (3.4 inches)89%moderate
March Weather-4°C (26°F)78 mm (3.1 inches)85%moderate
April Weather4°C (39°F)119 mm (4.7 inches)84%very high
May Weather11°C (52°F)104 mm (4.1 inches)78%very high
June Weather16°C (61°F)105 mm (4.1 inches)72%very high
July Weather19°C (66°F)118 mm (4.6 inches)75%very high
August Weather18°C (64°F)102 mm (4.0 inches)74%very high
September Weather14°C (57°F)75 mm (2.9 inches)77%high
October Weather7°C (46°F)139 mm (5.5 inches)85%moderate
November Weather-1°C (31°F)111 mm (4.4 inches)86%moderate
December Weather-6°C (21°F)95 mm (3.7 inches)85%low

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