January Weather in Costa Rica, Mexico

Last updated: August 26, 2025

In Costa Rica, Mexico, the average temperature in January hovers around 21°C (70°F), with a minimum dipping to 10°C (50°F) and peaking at 32°C (90°F). Expect a modest precipitation amount of 13 mm (0.5 in) over approximately 3 days, accompanied by an average humidity level of 76%. Ideal for those who enjoy a mild and slightly humid climate!

January Temperature in Costa Rica

In January in Costa Rica, the average temperature is 21°C (70°F). Maximums can reach 32°C (90°F), while minimums can dip as low as 10°C (50°F). This makes it an ideal time for exploring and enjoying outdoor activities in Costa Rica.

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 21°C (70°F), with highs reaching up to 32°C (90°F) and lows dropping to around 10°C (50°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 precipitation amount is 13 mm (0.5 in) over a span of 3 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 13 mm (0.5 inches) of precipitation spread over approximately 3 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Costa Rica

In Costa Rica in January, humidity is 76%. With an average temperature of 21°C (70°F), this humidity feels like a warm, muggy embrace that can make outdoor activities feel more strenuous, prompting travelers to take frequent breaks and seek shade to stay comfortable during their adventures.

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 76%, 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 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, 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	21°C (70°F)	13 mm (0.5 inches)	76%	extreme
February Weather	22°C (72°F)	8 mm (0.3 inches)	68%	extreme
March Weather	24°C (75°F)	6 mm (0.2 inches)	59%	extreme
April Weather	26°C (78°F)	21 mm (0.8 inches)	57%	extreme
May Weather	26°C (79°F)	118 mm (4.6 inches)	65%	extreme
June Weather	24°C (75°F)	305 mm (12.0 inches)	66%	extreme
July Weather	24°C (76°F)	81 mm (3.2 inches)	75%	extreme
August Weather	24°C (76°F)	137 mm (5.4 inches)	82%	extreme
September Weather	24°C (75°F)	216 mm (8.5 inches)	82%	extreme
October Weather	23°C (74°F)	180 mm (7.1 inches)	83%	extreme
November Weather	22°C (72°F)	42 mm (1.6 inches)	80%	extreme
December Weather	21°C (71°F)	14 mm (0.5 inches)	76%	very high