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January Weather in San Diego, Colombia

Last updated: August 23, 2025

In San Diego, Colombia, the average temperature in January hovers around 25°C (77°F), offering a pleasant climate. Expect a minimum of 17°C (62°F) and a maximum reaching 33°C (91°F). Rainfall contributes an average of 51 mm (2.0 in) over 6 days, while humidity levels sit comfortably at 65%.

January Temperature in San Diego

In January in San Diego, the average temperature is 25°C (77°F). Maximum temperatures can reach 33°C (91°F), while minimum temperatures can drop to as low as 17°C (62°F). Overall, it's a pleasant time to explore San Diego, so pack accordingly for both warm days and cooler evenings.

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

The chart illustrates January temperature patterns in San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Diego, January typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (91°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec767777777878797978777777
Data source: Temperature data for San Diego 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 Diego

In San Diego in January, the precipitation amount is 51 mm (2.0 in) over the course of 6 days.

January Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, 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 Diego, January typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec513319542961541728740148853129154
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Diego

In San Diego in January, humidity is 65%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making outdoor activities slightly uncomfortable but still bearable, as the sticky air clings to your skin and encourages you to seek shade or a refreshing drink.

January Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, 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 Diego is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%65%64%64%65%77%85%85%84%82%79%69%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Diego

In San Diego 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 Diego.

Maximum UV Index Levels in San Diego for January

The chart shows the monthly maximum UV Index (UVI) for San Diego 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 Diego typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151513131413141111
Data source: San Diego 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 Diego Compares to Other Months

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

This table compares monthly weather conditions in San Diego, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)51 mm (2.0 inches)65%extreme
February Weather25°C (77°F)33 mm (1.3 inches)65%extreme
March Weather25°C (77°F)195 mm (7.7 inches)64%extreme
April Weather25°C (78°F)429 mm (16.9 inches)64%extreme
May Weather26°C (78°F)615 mm (24.2 inches)65%extreme
June Weather26°C (79°F)417 mm (16.4 inches)77%extreme
July Weather26°C (79°F)287 mm (11.3 inches)85%extreme
August Weather26°C (79°F)401 mm (15.8 inches)85%extreme
September Weather25°C (78°F)488 mm (19.2 inches)84%extreme
October Weather25°C (77°F)531 mm (20.9 inches)82%extreme
November Weather25°C (77°F)291 mm (11.5 inches)79%extreme
December Weather25°C (77°F)54 mm (2.1 inches)69%extreme

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