May Weather in Santo Domingo, Costa Rica

Last updated: August 23, 2025

In May, the average temperature in Santo Domingo, 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 Santo Domingo

In May in Santo Domingo, 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 Santo Domingo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Santo Domingo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Domingo, 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 Santo Domingo generated using information from the Copernicus Climate Change Service.

May Precipitation in Santo Domingo

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

May Precipitation Trends in Santo Domingo

The chart displays monthly precipitation patterns in Santo Domingo, 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 Santo Domingo, 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 Santo Domingo

In Santo Domingo 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 Santo Domingo

This chart illustrates the average monthly humidity levels in Santo Domingo, 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 Santo Domingo 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 Santo Domingo

In Santo Domingo 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 Santo Domingo, you can check here.

Maximum UV Index Levels in Santo Domingo for May

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

Data source: Santo Domingo 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 Santo Domingo Compares to Other Months

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

This table compares monthly weather conditions in Santo Domingo, 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