May Weather in Belen, Costa Rica

Last updated: August 23, 2025

In Belen, Costa Rica, the average temperature in May hovers around 28°C (82°F), with minimums dipping to 22°C (73°F) and highs soaring up to 38°C (100°F). Expect precipitation of 255 mm (10.1 in) spread over 20 days, accompanied by an average humidity of 63%. Enjoy the warm and humid atmosphere while you explore!

May Temperature in Belen

In May in Belen, the average temperature is 28°C (82°F). Maximums can reach 38°C (100°F) and minimums can dip to as low as 22°C (73°F). This warm climate makes Belen an ideal destination for travelers looking to enjoy sunny weather and outdoor activities.

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

The chart illustrates May temperature patterns in Belen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belen, May typically has an average temperature of 28°C (82°F), with highs reaching up to 38°C (100°F) and lows dropping to around 22°C (73°F).

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

May Precipitation in Belen

In Belen in May, the precipitation amount is 255 mm (10.1 in) spread over 20 days.

May Precipitation Trends in Belen

The chart displays monthly precipitation patterns in Belen, 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 Belen, May typically receives around 255 mm (10.1 inches) of precipitation spread over approximately 20 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 Belen

In Belen in May humidity is 63%. With an average temperature of 28°C (82°F), this humidity feels like a warm, enveloping blanket, making outdoor exploration sticky yet exhilarating, requiring frequent breaks for hydration and a refreshing dip.

May Average Humidity in Belen

This chart illustrates the average monthly humidity levels in Belen, 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 Belen is approximately 63%, 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 Belen

In Belen 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 Belen, you can check here.

Maximum UV Index Levels in Belen for May

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

Data source: Belen 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 Belen Compares to Other Months

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

This table compares monthly weather conditions in Belen, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	5 mm (0.2 inches)	66%	extreme
February Weather	28°C (82°F)	1 mm (0.0 inches)	64%	extreme
March Weather	28°C (83°F)	1 mm (0.0 inches)	63%	extreme
April Weather	29°C (85°F)	35 mm (1.4 inches)	63%	extreme
May Weather	28°C (82°F)	255 mm (10.1 inches)	63%	extreme
June Weather	27°C (81°F)	289 mm (11.4 inches)	74%	extreme
July Weather	27°C (81°F)	115 mm (4.5 inches)	85%	extreme
August Weather	27°C (81°F)	224 mm (8.8 inches)	82%	extreme
September Weather	26°C (79°F)	277 mm (10.9 inches)	80%	extreme
October Weather	26°C (79°F)	374 mm (14.7 inches)	79%	extreme
November Weather	26°C (79°F)	138 mm (5.4 inches)	79%	extreme
December Weather	27°C (80°F)	12 mm (0.5 inches)	70%	very high