May Weather in Colon, Costa Rica

Last updated: August 23, 2025

In May, the average temperature in Colon, Costa Rica hovers around 21°C (70°F), creating a pleasant climate for outdoor activities. Temperatures can dip to a minimum of 16°C (61°F) and peak at a comfortable 28°C (83°F). Be prepared for some rain, as precipitation typically reaches 391 mm (15.4 in) over 27 days. The average humidity is around 69%, contributing to a refreshing atmosphere.

May Temperature in Colon

In May in Colon, the average temperature is 21°C (70°F). Maximums can reach 28°C (83°F), while minimums can drop to 16°C (61°F). This climate makes it an ideal time for travelers seeking pleasant weather and comfortable outdoor activities.

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

The chart illustrates May temperature patterns in Colon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colon, May typically has an average temperature of 21°C (70°F), with highs reaching up to 28°C (83°F) and lows dropping to around 16°C (61°F).

Data source: Temperature data for Colon generated using information from the Copernicus Climate Change Service.

May Precipitation in Colon

In Colon, in May, the total precipitation amount is 391 mm (15.4 in) spread over 27 days.

May Precipitation Trends in Colon

The chart displays monthly precipitation patterns in Colon, 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 Colon, May typically receives around 391 mm (15.4 inches) of precipitation spread over approximately 27 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Colon

In Colon in May humidity is 69%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring occasional breaks for hydration and shade during your travels.

May Average Humidity in Colon

This chart illustrates the average monthly humidity levels in Colon, 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 Colon is approximately 69%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Colon

In Colon in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Colon, you can check here.

Maximum UV Index Levels in Colon for May

The chart shows the monthly maximum UV Index (UVI) for Colon 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 Colon typically reaches 14, which falls under the extreme exposure category.

Data source: Colon 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 Colon Compares to Other Months

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

This table compares monthly weather conditions in Colon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	32 mm (1.3 inches)	68%	extreme
February Weather	20°C (69°F)	13 mm (0.5 inches)	68%	extreme
March Weather	21°C (70°F)	15 mm (0.6 inches)	66%	extreme
April Weather	21°C (70°F)	79 mm (3.1 inches)	67%	extreme
May Weather	21°C (70°F)	391 mm (15.4 inches)	69%	extreme
June Weather	21°C (70°F)	351 mm (13.8 inches)	84%	extreme
July Weather	21°C (69°F)	233 mm (9.2 inches)	85%	extreme
August Weather	20°C (69°F)	331 mm (13.0 inches)	82%	extreme
September Weather	20°C (69°F)	436 mm (17.2 inches)	81%	extreme
October Weather	20°C (68°F)	570 mm (22.4 inches)	80%	extreme
November Weather	20°C (68°F)	209 mm (8.2 inches)	80%	extreme
December Weather	20°C (68°F)	63 mm (2.5 inches)	72%	very high