May Weather in Arenal, Honduras

Last updated: August 23, 2025

In May, the average temperature in Arenal, Honduras hovers around 25°C (78°F). Expect a minimum of 15°C (60°F) and a maximum soaring to 37°C (99°F). Be prepared for 126 mm (5.0 in) of precipitation over 17 days, resulting in an average humidity of 59%. Enjoy the dynamic weather of this vibrant locale!

May Temperature in Arenal

In May in Arenal, the average temperature is 25°C (78°F). Maximum temperatures can reach as high as 37°C (99°F), while the minimum can drop to 15°C (60°F). This makes Arenal an ideal destination for travelers seeking warm weather and a pleasant climate for outdoor activities.

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

The chart illustrates May temperature patterns in Arenal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arenal, May typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 15°C (60°F).

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

May Precipitation in Arenal

In Arenal in May, the precipitation amount is 126 mm (5.0 in) over a duration of 17 days.

May Precipitation Trends in Arenal

The chart displays monthly precipitation patterns in Arenal, 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 Arenal, May typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 17 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Arenal

In Arenal in May, humidity is 59%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, creating a slightly sticky atmosphere that can make outdoor explorations feel both refreshing and somewhat uncomfortable as you wander through the sights.

May Average Humidity in Arenal

This chart illustrates the average monthly humidity levels in Arenal, 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 Arenal is approximately 59%, 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 Arenal

In Arenal 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 Arenal, you can check here.

Maximum UV Index Levels in Arenal for May

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

Data source: Arenal 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 Arenal Compares to Other Months

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

This table compares monthly weather conditions in Arenal, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (69°F)	37 mm (1.5 inches)	78%	extreme
February Weather	22°C (71°F)	23 mm (0.9 inches)	74%	extreme
March Weather	23°C (73°F)	25 mm (1.0 inches)	67%	extreme
April Weather	25°C (77°F)	37 mm (1.4 inches)	61%	extreme
May Weather	25°C (78°F)	126 mm (5.0 inches)	59%	extreme
June Weather	25°C (77°F)	131 mm (5.2 inches)	61%	extreme
July Weather	24°C (76°F)	99 mm (3.9 inches)	68%	extreme
August Weather	24°C (76°F)	122 mm (4.8 inches)	70%	extreme
September Weather	24°C (76°F)	125 mm (4.9 inches)	75%	extreme
October Weather	23°C (74°F)	205 mm (8.1 inches)	81%	extreme
November Weather	22°C (71°F)	127 mm (5.0 inches)	82%	very high
December Weather	21°C (69°F)	49 mm (1.9 inches)	75%	very high