March Weather in San Jose, United States

Last updated: June 24, 2025

In March, the average temperature in San Jose, United States hovers around 15°C (59°F). Expect a refreshing range, with minimums dipping to 0°C (32°F) and highs reaching 31°C (89°F). During this month, you can anticipate 16 mm (0.6 in) of precipitation spread across 3 days, complemented by an average humidity of 68%.

March Temperature in San Jose

In March in San Jose, the average temperature is 15°C (59°F), with maximums reaching up to 31°C (89°F) and minimums dropping as low as 0°C (32°F). It's a great time for travelers to experience a mix of warm sunshine and cooler evenings, so be sure to pack accordingly!

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

The chart illustrates March temperature patterns in San Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jose, March typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (89°F) and lows dropping to around 0°C (32°F).

Data source: Temperature data for San Jose generated using information from the Copernicus Climate Change Service.

March Precipitation in San Jose

In San Jose in March, the precipitation amount is 16 mm (0.6 in), spread over a duration of 3 days.

March Precipitation Trends in San Jose

The chart displays monthly precipitation patterns in San Jose, 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 Jose, March typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 3 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in San Jose

In San Jose in March, humidity is 68%. With an average temperature of 15°C (59°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls and sightseeing, but travelers should be prepared for occasional discomfort as the mugginess can dampen outdoor activities.

March Average Humidity in San Jose

This chart illustrates the average monthly humidity levels in San Jose, 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 Jose is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Jose

In San Jose in March, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Jose.

Maximum UV Index Levels in San Jose for March

The chart shows the monthly maximum UV Index (UVI) for San Jose 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 Jose typically reaches 10, which falls under the very high exposure category.

Data source: San Jose 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 Jose Compares to Other Months

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

This table compares monthly weather conditions in San Jose, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	23 mm (0.9 inches)	81%	moderate
February Weather	10°C (50°F)	32 mm (1.2 inches)	82%	high
March Weather	15°C (59°F)	16 mm (0.6 inches)	68%	very high
April Weather	20°C (68°F)	2 mm (0.1 inches)	55%	extreme
May Weather	24°C (76°F)	3 mm (0.1 inches)	45%	extreme
June Weather	30°C (86°F)	4 mm (0.2 inches)	37%	extreme
July Weather	30°C (86°F)	45 mm (1.8 inches)	43%	extreme
August Weather	29°C (85°F)	22 mm (0.9 inches)	53%	extreme
September Weather	26°C (79°F)	28 mm (1.1 inches)	66%	extreme
October Weather	20°C (68°F)	13 mm (0.5 inches)	72%	very high
November Weather	14°C (58°F)	20 mm (0.8 inches)	81%	high
December Weather	9°C (48°F)	25 mm (1.0 inches)	84%	moderate