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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 20°C (69°F), offering a pleasant climate for various activities. However, be prepared for temperature fluctuations, with a minimum of 2°C (35°F) and a maximum reaching up to 35°C (95°F). Rainfall can be expected, with 128 mm (5.0 in) spread across 13 days, contributing to a high average humidity of 82%. Whether you're planning an adventure or a relaxing getaway, the weather in Columbia certainly has its character!

May Temperature in Columbia

In May in Columbia, the average temperature is 20°C (69°F). Maximums can reach 35°C (95°F), and minimums can be as low as 2°C (35°F). Be prepared for a wide range of temperatures when traveling, ensuring you pack layers for both warm days and cooler nights.

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 20°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec394450576875797773624844
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 128 mm (5.0 in) spread over 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 128 mm (5.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec10018914814512816211111412112584146
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 82%. With an average temperature of 20°C (69°F), this humidity feels like a warm, sticky embrace that clings to your skin, making it necessary to stay hydrated while exploring the sights.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
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 Weather4°C (39°F)100 mm (3.9 inches)87%moderate
February Weather6°C (44°F)189 mm (7.4 inches)86%high
March Weather10°C (51°F)148 mm (5.8 inches)86%high
April Weather14°C (58°F)145 mm (5.7 inches)82%very high
May Weather20°C (69°F)128 mm (5.0 inches)82%very high
June Weather24°C (75°F)162 mm (6.4 inches)83%extreme
July Weather26°C (79°F)111 mm (4.4 inches)80%extreme
August Weather25°C (77°F)114 mm (4.5 inches)74%very high
September Weather23°C (73°F)121 mm (4.8 inches)71%very high
October Weather17°C (63°F)125 mm (4.9 inches)78%high
November Weather9°C (48°F)84 mm (3.3 inches)88%moderate
December Weather7°C (44°F)146 mm (5.7 inches)88%moderate

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