December Weather in Guacimo, Costa Rica

Last updated: August 23, 2025

In December, the average temperature in Guacimo, Costa Rica is a pleasant 23°C (73°F), making it an ideal time to explore. Expect minimum temperatures dipping to 17°C (64°F) and reaching a maximum of 29°C (84°F). However, be prepared for some rain, as the area receives about 320 mm (12.6 in) of precipitation over 20 days. With an average humidity of 74%, you might want to stay hydrated while enjoying the local sights!

December Temperature in Guacimo

In December in Guacimo, the average temperature is 23°C (73°F), with maximums reaching 29°C (84°F) and minimums dropping to 17°C (64°F). It's an ideal time for travelers to enjoy pleasant weather and outdoor activities.

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

The chart illustrates December temperature patterns in Guacimo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guacimo, December typically has an average temperature of 23°C (73°F), with highs reaching up to 29°C (84°F) and lows dropping to around 17°C (64°F).

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

December Precipitation in Guacimo

In Guacimo in December, the total precipitation amount is 320 mm (12.6 in) distributed over 20 days.

December Precipitation Trends in Guacimo

The chart displays monthly precipitation patterns in Guacimo, 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 Guacimo, December typically receives around 320 mm (12.6 inches) of precipitation spread over approximately 20 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Guacimo

In Guacimo in December humidity is 74%. With an average temperature of 23°C (73°F), this humidity feels like walking through a warm, enveloping fog, making outdoor activities more strenuous and requiring frequent breaks for hydration.

December Average Humidity in Guacimo

This chart illustrates the average monthly humidity levels in Guacimo, 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 Guacimo is approximately 74%, 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 Guacimo

In Guacimo in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Guacimo.

Maximum UV Index Levels in Guacimo for December

The chart shows the monthly maximum UV Index (UVI) for Guacimo 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 Guacimo typically reaches 10, which falls under the very high exposure category.

Data source: Guacimo 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 Guacimo Compares to Other Months

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

This table compares monthly weather conditions in Guacimo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	203 mm (8.0 inches)	71%	extreme
February Weather	22°C (72°F)	86 mm (3.4 inches)	70%	extreme
March Weather	23°C (73°F)	93 mm (3.7 inches)	68%	extreme
April Weather	24°C (75°F)	120 mm (4.7 inches)	69%	extreme
May Weather	24°C (76°F)	356 mm (14.0 inches)	70%	extreme
June Weather	24°C (76°F)	269 mm (10.6 inches)	81%	extreme
July Weather	24°C (75°F)	286 mm (11.3 inches)	88%	extreme
August Weather	24°C (76°F)	203 mm (8.0 inches)	85%	extreme
September Weather	24°C (76°F)	192 mm (7.6 inches)	84%	extreme
October Weather	24°C (75°F)	405 mm (15.9 inches)	82%	extreme
November Weather	23°C (74°F)	334 mm (13.1 inches)	81%	extreme
December Weather	23°C (73°F)	320 mm (12.6 inches)	74%	very high