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May Weather in Columbia, United States

Last updated: June 24, 2025

In Columbia, United States, the average temperature in May hovers around 18°C (64°F), with an impressive range where minimums can drop to 1°C (34°F) and maximums soar to 33°C (93°F). Expect 14 days of rain throughout the month, accumulating 125 mm (4.9 in) of precipitation. With an average humidity of 78%, be prepared for a pleasantly damp atmosphere!

May Temperature in Columbia

In May in Columbia, the average temperature is 18°C (64°F). Maximum temperatures can reach 33°C (93°F), while the minimum can drop as low as 1°C (34°F). Visitors should be prepared for a wide range of temperatures, making layering essential for an enjoyable trip.

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 18°C (64°F), with highs reaching up to 33°C (93°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec343843546473787670604538
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 125 mm (4.9 in) over the course of 14 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 125 mm (4.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec601019998125971301301081018893
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 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

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.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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 Weather1°C (35°F)60 mm (2.4 inches)84%moderate
February Weather3°C (38°F)101 mm (4.0 inches)83%moderate
March Weather6°C (44°F)99 mm (3.9 inches)83%high
April Weather12°C (54°F)98 mm (3.9 inches)81%very high
May Weather18°C (64°F)125 mm (4.9 inches)78%very high
June Weather23°C (73°F)97 mm (3.8 inches)79%very high
July Weather26°C (79°F)130 mm (5.1 inches)74%very high
August Weather24°C (76°F)130 mm (5.1 inches)72%very high
September Weather21°C (70°F)108 mm (4.2 inches)75%very high
October Weather16°C (60°F)101 mm (4.0 inches)81%high
November Weather7°C (45°F)88 mm (3.5 inches)85%moderate
December Weather4°C (39°F)93 mm (3.7 inches)84%low

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