December Weather in Sixaola, Costa Rica

Last updated: August 23, 2025

In December, the average temperature in Sixaola, Costa Rica hovers around 26°C (78°F), with comfortable minimums of 22°C (72°F) and pleasant maximums reaching up to 30°C (86°F). However, travelers should prepare for significant rainfall, with 268 mm (10.6 in) expected over the course of 24 days. The average humidity sits at a sultry 72%, creating a warm, tropical ambiance ideal for exploration.

December Temperature in Sixaola

In December in Sixaola, the average temperature is 26°C (78°F), with maximums reaching up to 30°C (86°F) and minimums dipping as low as 22°C (72°F). This makes it an ideal time for travelers to enjoy warm weather and outdoor activities.

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

The chart illustrates December temperature patterns in Sixaola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sixaola, December typically has an average temperature of 26°C (78°F), with highs reaching up to 30°C (86°F) and lows dropping to around 22°C (72°F).

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

December Precipitation in Sixaola

In Sixaola in December, the precipitation amount is 268 mm (10.6 in) during a span of 24 days.

December Precipitation Trends in Sixaola

The chart displays monthly precipitation patterns in Sixaola, 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 Sixaola, December typically receives around 268 mm (10.6 inches) of precipitation spread over approximately 24 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 Sixaola

In Sixaola in December, humidity is 72%. With an average temperature of 26°C (78°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in the shade.

December Average Humidity in Sixaola

This chart illustrates the average monthly humidity levels in Sixaola, 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 Sixaola is approximately 72%, 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 Sixaola

In Sixaola 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 Sixaola.

Maximum UV Index Levels in Sixaola for December

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

Data source: Sixaola 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 Sixaola Compares to Other Months

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

This table compares monthly weather conditions in Sixaola, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	192 mm (7.6 inches)	68%	extreme
February Weather	25°C (78°F)	126 mm (4.9 inches)	68%	extreme
March Weather	25°C (78°F)	133 mm (5.2 inches)	66%	extreme
April Weather	26°C (80°F)	197 mm (7.7 inches)	67%	extreme
May Weather	27°C (81°F)	375 mm (14.8 inches)	69%	extreme
June Weather	27°C (81°F)	326 mm (12.8 inches)	84%	extreme
July Weather	27°C (80°F)	431 mm (17.0 inches)	85%	extreme
August Weather	27°C (81°F)	314 mm (12.4 inches)	82%	extreme
September Weather	27°C (81°F)	239 mm (9.4 inches)	81%	extreme
October Weather	27°C (80°F)	365 mm (14.4 inches)	80%	extreme
November Weather	26°C (80°F)	313 mm (12.3 inches)	80%	extreme
December Weather	26°C (78°F)	268 mm (10.6 inches)	72%	very high