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January Weather in San Francisco, Panama

Last updated: August 27, 2025

In San Francisco, Panama, the average temperature for January is a pleasant 20°C (68°F). Expect a minimum of 14°C (57°F) and a maximum reaching 27°C (80°F). During this month, anticipate 81 mm (3.2 in) of precipitation over approximately 15 days, with an average humidity of 68%, creating a comfortable yet slightly damp atmosphere.

January Temperature in San Francisco

In January in San Francisco, the average temperature is 20°C (68°F). Maximum temperatures can reach 27°C (80°F), while minimums can drop to as low as 14°C (57°F). This makes San Francisco a comfortable destination for travelers looking to enjoy mild weather and various outdoor activities.

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

The chart illustrates January temperature patterns in San Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco, January typically has an average temperature of 20°C (68°F), with highs reaching up to 27°C (80°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec686969697070706969696868
Data source: Temperature data for San Francisco 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 Francisco

In San Francisco in January, the precipitation amount is 81 mm (3.2 in) spread over the course of 15 days.

January Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, 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 Francisco, January typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec816754285504476456481502637494210
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Francisco

In San Francisco in January humidity is 68%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls while also prompting travelers to stay hydrated and seek out refreshing breaks from the heat.

January Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, 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 Francisco 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 Francisco

In San Francisco 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 Francisco.

Maximum UV Index Levels in San Francisco for January

The chart shows the monthly maximum UV Index (UVI) for San Francisco 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 Francisco typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415151514141414141211
Data source: San Francisco 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 Francisco Compares to Other Months

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

This table compares monthly weather conditions in San Francisco, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)81 mm (3.2 inches)68%extreme
February Weather20°C (69°F)67 mm (2.6 inches)68%extreme
March Weather21°C (69°F)54 mm (2.1 inches)66%extreme
April Weather21°C (70°F)285 mm (11.2 inches)67%extreme
May Weather21°C (70°F)504 mm (19.8 inches)69%extreme
June Weather21°C (70°F)476 mm (18.8 inches)84%extreme
July Weather21°C (70°F)456 mm (18.0 inches)85%extreme
August Weather21°C (70°F)481 mm (18.9 inches)82%extreme
September Weather21°C (69°F)502 mm (19.8 inches)81%extreme
October Weather20°C (69°F)637 mm (25.1 inches)80%extreme
November Weather20°C (68°F)494 mm (19.4 inches)80%extreme
December Weather20°C (68°F)210 mm (8.3 inches)72%extreme

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