January Weather in Costa Rica, Brazil

Last updated: August 22, 2025

In January, the average temperature in Costa Rica, Brazil hovers around 26°C (79°F). Expect a range from a cool 16°C (61°F) to a warm 37°C (99°F), making it a month of contrasts. Be prepared for 160 mm (6.3 in) of precipitation spread over 16 days, contributing to an average humidity of 85%. Enjoy the vibrant atmosphere while staying prepared for the elements!

January Temperature in Costa Rica

In January in Costa Rica, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F), while minimums can dip as low as 16°C (61°F). This variety in temperatures makes it a perfect time for travelers to enjoy both the warm days and cooler evenings.

January Weather in Costa Rica: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Costa Rica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costa Rica, January typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 16°C (61°F).

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

January Precipitation in Costa Rica

In Costa Rica in January, the total precipitation amount is 160 mm (6.3 in) spread over 16 days.

January Precipitation Trends in Costa Rica

The chart displays monthly precipitation patterns in Costa Rica, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Costa Rica, January typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Costa Rica

In Costa Rica in January, humidity is 85%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities feel stifling and exhausting for travelers.

January Average Humidity in Costa Rica

This chart illustrates the average monthly humidity levels in Costa Rica, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Costa Rica is approximately 85%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Costa Rica

In Costa Rica in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Costa Rica.

Maximum UV Index Levels in Costa Rica for January

The chart shows the monthly maximum UV Index (UVI) for Costa Rica in January, 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 January, the maximum UV index in Costa Rica typically reaches 15, which falls under the extreme exposure category.

Data source: Costa Rica January 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 January Weather in Costa Rica Compares to Other Months

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

This table compares monthly weather conditions in Costa Rica, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	160 mm (6.3 inches)	85%	extreme
February Weather	25°C (78°F)	131 mm (5.1 inches)	83%	extreme
March Weather	25°C (77°F)	146 mm (5.8 inches)	82%	extreme
April Weather	23°C (73°F)	63 mm (2.5 inches)	76%	extreme
May Weather	20°C (68°F)	98 mm (3.9 inches)	67%	very high
June Weather	18°C (65°F)	88 mm (3.5 inches)	61%	high
July Weather	18°C (64°F)	23 mm (0.9 inches)	52%	high
August Weather	20°C (68°F)	94 mm (3.7 inches)	42%	very high
September Weather	24°C (75°F)	57 mm (2.2 inches)	42%	extreme
October Weather	24°C (76°F)	176 mm (6.9 inches)	43%	extreme
November Weather	25°C (77°F)	100 mm (3.9 inches)	68%	extreme
December Weather	26°C (78°F)	216 mm (8.5 inches)	84%	extreme