December Weather in Cot, Costa Rica

Last updated: August 23, 2025

In Cot, Costa Rica, the average temperature in December is a comfortable 18°C (64°F), with daytime highs reaching up to 23°C (74°F) and nighttime lows dipping to 12°C (54°F). Expect 290 mm (11.4 in) of precipitation spread over approximately 20 days, contributing to an average humidity of 72%. Prepare for a month that balances warmth with refreshing moisture!

December Temperature in Cot

In December in Cot, the average temperature is 18°C (64°F). Maximums can reach 23°C (74°F) and minimums can be as low as 12°C (54°F). This makes it a pleasant time to explore outdoor activities and enjoy the mild weather.

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

The chart illustrates December temperature patterns in Cot, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cot, December typically has an average temperature of 18°C (64°F), with highs reaching up to 23°C (74°F) and lows dropping to around 12°C (54°F).

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

December Precipitation in Cot

In Cot in December, the precipitation amount is 290 mm (11.4 in) over the course of 20 days.

December Precipitation Trends in Cot

The chart displays monthly precipitation patterns in Cot, 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 Cot, December typically receives around 290 mm (11.4 inches) of precipitation spread over approximately 20 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 Cot

In Cot in December, humidity is 72%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as the air clings to your skin, leaving you longing for a refreshing breeze.

December Average Humidity in Cot

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

In Cot 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 Cot.

Maximum UV Index Levels in Cot for December

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

Data source: Cot 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 Cot Compares to Other Months

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

This table compares monthly weather conditions in Cot, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	194 mm (7.6 inches)	68%	extreme
February Weather	17°C (63°F)	105 mm (4.1 inches)	68%	extreme
March Weather	17°C (63°F)	117 mm (4.6 inches)	66%	extreme
April Weather	19°C (66°F)	167 mm (6.6 inches)	67%	extreme
May Weather	20°C (67°F)	468 mm (18.4 inches)	69%	extreme
June Weather	20°C (68°F)	292 mm (11.5 inches)	84%	extreme
July Weather	19°C (67°F)	254 mm (10.0 inches)	85%	extreme
August Weather	19°C (67°F)	243 mm (9.5 inches)	82%	extreme
September Weather	19°C (67°F)	284 mm (11.2 inches)	81%	extreme
October Weather	19°C (67°F)	479 mm (18.9 inches)	80%	extreme
November Weather	19°C (66°F)	341 mm (13.4 inches)	80%	extreme
December Weather	18°C (64°F)	290 mm (11.4 inches)	72%	very high