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March Weather in San Francisco, Mexico

Last updated: August 27, 2025

In March, the average temperature in San Francisco, Mexico hovers around 18°C (65°F), making it a pleasant time to visit. Expect temperatures to range from a cool 6°C (44°F) to a warm 32°C (89°F). During this month, precipitation averages 46 mm (1.8 in) across 10 days, resulting in a humidity level of 59%. It’s a balanced climate that merges comfortable warmth with refreshing breezes.

March Temperature in San Francisco

In March in San Francisco, the average temperature is 18°C (65°F). Maximums can reach 32°C (89°F), while minimums can dip as low as 6°C (44°F). Be sure to pack both light clothing for the daytime and warmer layers for the cooler evenings when traveling during this month.

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

The chart illustrates March 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, March typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (89°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec616365707270697070686562
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.

March Precipitation in San Francisco

In San Francisco in March, the precipitation amount is 46 mm (1.8 in) over the course of 10 days.

March Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In San Francisco, March typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8153465513229710415919720511363
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Francisco

In San Francisco in March, humidity is 59%. With an average temperature of 18°C (65°F), this humidity feels like a gentle embrace, providing a refreshing atmosphere that's ideal for exploring the sights without feeling too hot or sticky.

March Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in San Francisco is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Francisco

In San Francisco in March, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Francisco, you can check here.

Maximum UV Index Levels in San Francisco for March

The chart shows the monthly maximum UV Index (UVI) for San Francisco in March, 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 March, the maximum UV index in San Francisco typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141413109
Data source: San Francisco March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (62°F)81 mm (3.2 inches)84%very high
February Weather17°C (64°F)53 mm (2.1 inches)73%extreme
March Weather18°C (65°F)46 mm (1.8 inches)59%extreme
April Weather21°C (70°F)55 mm (2.2 inches)52%extreme
May Weather22°C (72°F)132 mm (5.2 inches)53%extreme
June Weather21°C (70°F)297 mm (11.7 inches)55%extreme
July Weather20°C (69°F)104 mm (4.1 inches)61%extreme
August Weather21°C (70°F)159 mm (6.2 inches)71%extreme
September Weather21°C (70°F)197 mm (7.8 inches)77%extreme
October Weather20°C (69°F)205 mm (8.1 inches)78%extreme
November Weather18°C (65°F)113 mm (4.4 inches)82%very high
December Weather17°C (63°F)63 mm (2.5 inches)86%very high

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