December Weather in Arenal, Honduras

Last updated: August 23, 2025

In Arenal, Honduras, the average temperature in December is a pleasant 21°C (69°F). However, temperatures can vary widely, with a minimum of 12°C (54°F) and a maximum reaching 32°C (89°F). During this month, expect about 49 mm (1.9 in) of precipitation spread over 12 days, contributing to an average humidity of 75%. Enjoy the balance of warmth and refreshing rainfall!

December Temperature in Arenal

In December in Arenal, the average temperature is 21°C (69°F). Maximums can reach 32°C (89°F) and minimums can be as low as 12°C (54°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates December 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, December typically has an average temperature of 21°C (69°F), with highs reaching up to 32°C (89°F) and lows dropping to around 12°C (54°F).

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

December Precipitation in Arenal

In Arenal in December, the total precipitation amount is 49 mm (1.9 in) spread over 12 days.

December Precipitation Trends in Arenal

The chart displays monthly precipitation patterns in Arenal, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Arenal, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Arenal

In Arenal in December, humidity is 75%. With an average temperature of 21°C (69°F), this humidity feels like a warm, sticky embrace that can make even a short walk feel exhausting for travelers, often leading to a longing for refreshing breezes or air-conditioned retreats.

December Average Humidity in Arenal

This chart illustrates the average monthly humidity levels in Arenal, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Arenal is approximately 75%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Arenal

In Arenal in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Arenal.

Maximum UV Index Levels in Arenal for December

The chart shows the monthly maximum UV Index (UVI) for Arenal in December, 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 December, the maximum UV index in Arenal typically reaches 9, which falls under the very high exposure category.

Data source: Arenal December 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 December 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 December’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 December’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