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January Weather in San Juan, Panama

Last updated: August 27, 2025

In January, the average temperature in San Juan, Panama hovers around 26°C (79°F), with minimums dipping to 20°C (68°F) and maximums reaching up to 33°C (91°F). You'll encounter an average precipitation of 31 mm (1.2 in) spread over 4 days, contributing to an average humidity of 72%. Enjoy the warmth, but be prepared for the occasional shower!

January Temperature in San Juan

In January in San Juan, the average temperature is 26°C (79°F). Maximum temperatures can reach 33°C (91°F), while minimums may drop to as low as 20°C (68°F). This pleasant and warm climate makes San Juan an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates January temperature patterns in San Juan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan, January typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec798081817978787877777778
Data source: Temperature data for San Juan 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 Juan

In San Juan in January, the total precipitation amount is 31 mm (1.2 in) over a span of 4 days.

January Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, 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 Juan, January typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec3187105355353404359459411385103
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Juan

In San Juan in January, humidity is 72%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel a bit more strenuous but also adding a tropical charm to your travels.

January Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, 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 Juan is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%71%69%70%73%90%89%87%87%86%86%79%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Juan

In San Juan 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 Juan.

Maximum UV Index Levels in San Juan for January

The chart shows the monthly maximum UV Index (UVI) for San Juan 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 Juan typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151513141314141211
Data source: San Juan 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 Juan Compares to Other Months

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

This table compares monthly weather conditions in San Juan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)31 mm (1.2 inches)72%extreme
February Weather27°C (80°F)8 mm (0.3 inches)71%extreme
March Weather27°C (81°F)7 mm (0.3 inches)69%extreme
April Weather27°C (81°F)105 mm (4.1 inches)70%extreme
May Weather26°C (79°F)355 mm (14.0 inches)73%extreme
June Weather26°C (78°F)353 mm (13.9 inches)90%extreme
July Weather26°C (78°F)404 mm (15.9 inches)88%extreme
August Weather25°C (78°F)359 mm (14.1 inches)87%extreme
September Weather25°C (78°F)459 mm (18.1 inches)87%extreme
October Weather25°C (77°F)410 mm (16.2 inches)86%extreme
November Weather25°C (77°F)385 mm (15.1 inches)86%extreme
December Weather26°C (78°F)103 mm (4.1 inches)79%extreme

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