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January Weather in San Rafael, Costa Rica

Last updated: August 23, 2025

In January, the average temperature in San Rafael, Costa Rica hovers around 23°C (74°F). Expect a range from a pleasant 17°C (63°F) to a warm 31°C (87°F). With 28 mm (1.1 in) of precipitation spread over 7 days, the humidity remains relatively high at 68%, adding to the region's unique climate charm.

January Temperature in San Rafael

In January in San Rafael, the average temperature is 23°C (74°F). Maximum temperatures can reach 31°C (87°F), while minimums can drop to as low as 17°C (63°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

January Weather in San Rafael: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Rafael, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Rafael, January typically has an average temperature of 23°C (74°F), with highs reaching up to 31°C (87°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec747576767575757473737374
Data source: Temperature data for San Rafael 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 San Rafael

In San Rafael in January, the precipitation amount is 28 mm (1.1 in) over a period of 7 days.

January Precipitation Trends in San Rafael

The chart displays monthly precipitation patterns in San Rafael, 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 San Rafael, January typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec28131811841239729739346163925172
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Rafael

In San Rafael in January, humidity is 68%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making traveling quite uncomfortable if you're not prepared. The air is thick and muggy, leaving you yearning for a cool breeze and frequent breaks in the shade.

January Average Humidity in San Rafael

This chart illustrates the average monthly humidity levels in San Rafael, 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 San Rafael is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%68%66%67%69%84%85%82%81%80%80%73%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Rafael

In San Rafael in January, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Rafael.

Maximum UV Index Levels in San Rafael for January

The chart shows the monthly maximum UV Index (UVI) for San Rafael 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 San Rafael typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151414141313141210
Data source: San Rafael 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 San Rafael Compares to Other Months

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

This table compares monthly weather conditions in San Rafael, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)28 mm (1.1 inches)68%extreme
February Weather24°C (76°F)13 mm (0.5 inches)68%extreme
March Weather25°C (77°F)18 mm (0.7 inches)66%extreme
April Weather24°C (76°F)118 mm (4.6 inches)67%extreme
May Weather24°C (75°F)412 mm (16.2 inches)69%extreme
June Weather24°C (75°F)397 mm (15.6 inches)84%extreme
July Weather24°C (75°F)296 mm (11.7 inches)85%extreme
August Weather23°C (74°F)393 mm (15.5 inches)82%extreme
September Weather23°C (74°F)461 mm (18.2 inches)81%extreme
October Weather23°C (73°F)639 mm (25.2 inches)80%extreme
November Weather23°C (74°F)251 mm (9.9 inches)80%extreme
December Weather23°C (74°F)72 mm (2.8 inches)72%very high

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