December Weather in Laguna, Costa Rica

Last updated: August 23, 2025

In Laguna, Costa Rica, the average temperature in December hovers around 20°C (68°F), with a comfortable range that peaks at 26°C (78°F) and dips to a minimum of 14°C (58°F). Expect 121 mm (4.7 in) of precipitation spread over 17 days, contributing to an average humidity of 74%. Embrace the mild weather while preparing for occasional rain!

December Temperature in Laguna

In December in Laguna, the average temperature is 20°C (68°F). The maximum can reach 26°C (78°F), and the minimum can be as low as 14°C (58°F). This pleasant climate makes it an ideal time for travel and exploration.

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

The chart illustrates December temperature patterns in Laguna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Laguna, December typically has an average temperature of 20°C (68°F), with highs reaching up to 26°C (78°F) and lows dropping to around 14°C (58°F).

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

December Precipitation in Laguna

In Laguna in December, the total precipitation amount is 121 mm (4.7 in), spread over 17 days.

December Precipitation Trends in Laguna

The chart displays monthly precipitation patterns in Laguna, 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 Laguna, December typically receives around 121 mm (4.7 inches) of precipitation spread over approximately 17 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 Laguna

In Laguna in December humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

December Average Humidity in Laguna

This chart illustrates the average monthly humidity levels in Laguna, 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 Laguna 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 Laguna

In Laguna 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 Laguna.

Maximum UV Index Levels in Laguna for December

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

Data source: Laguna 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 Laguna Compares to Other Months

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

This table compares monthly weather conditions in Laguna, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (67°F)	67 mm (2.7 inches)	71%	extreme
February Weather	20°C (68°F)	28 mm (1.1 inches)	70%	extreme
March Weather	20°C (69°F)	38 mm (1.5 inches)	68%	extreme
April Weather	21°C (71°F)	92 mm (3.6 inches)	69%	extreme
May Weather	21°C (71°F)	306 mm (12.0 inches)	70%	extreme
June Weather	21°C (71°F)	268 mm (10.6 inches)	81%	extreme
July Weather	21°C (70°F)	241 mm (9.5 inches)	88%	extreme
August Weather	21°C (70°F)	273 mm (10.8 inches)	85%	extreme
September Weather	21°C (70°F)	288 mm (11.3 inches)	84%	extreme
October Weather	21°C (69°F)	434 mm (17.1 inches)	82%	extreme
November Weather	20°C (69°F)	228 mm (9.0 inches)	81%	extreme
December Weather	20°C (68°F)	121 mm (4.7 inches)	74%	very high