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January Weather in Costa Rica, Peru

Last updated: August 27, 2025

In Costa Rica, Peru, the average temperature in January hovers around 25°C (77°F), making it a pleasant time to explore. However, be prepared for a range of temperatures, with minimums dropping to 19°C (66°F) and maximums soaring up to 34°C (94°F). Expect 217 mm (8.5 in) of precipitation spread over 22 days, and a noteworthy average humidity of 80%—perfect for those who love a lush, vibrant atmosphere!

January Temperature in Costa Rica

In January in Costa Rica, the average temperature is 25°C (77°F). Maximums can reach 34°C (94°F), and minimums can be as low as 19°C (66°F). This pleasant climate makes Costa Rica an ideal destination for travelers seeking comfortable weather.

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 25°C (77°F), with highs reaching up to 34°C (94°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec777777777675757778797877
Data source: Temperature data for Costa Rica generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Costa Rica

In Costa Rica in January, the total precipitation amount is 217 mm (8.5 in), accumulated over the span of 22 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 217 mm (8.5 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec21721224217414894626153146247220
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Costa Rica

In Costa Rica in January humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec151616161411111214151414
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.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)217 mm (8.5 inches)80%extreme
February Weather25°C (77°F)212 mm (8.4 inches)76%extreme
March Weather25°C (77°F)242 mm (9.5 inches)81%extreme
April Weather25°C (77°F)174 mm (6.9 inches)86%extreme
May Weather25°C (76°F)148 mm (5.8 inches)86%extreme
June Weather24°C (76°F)94 mm (3.7 inches)70%extreme
July Weather24°C (75°F)62 mm (2.5 inches)47%extreme
August Weather25°C (77°F)61 mm (2.4 inches)37%extreme
September Weather26°C (79°F)53 mm (2.1 inches)42%extreme
October Weather26°C (79°F)146 mm (5.7 inches)62%extreme
November Weather25°C (78°F)247 mm (9.7 inches)76%extreme
December Weather25°C (78°F)220 mm (8.7 inches)89%extreme

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