March Weather in San Diego, Mexico

Last updated: August 27, 2025

In San Diego, Mexico, the average temperature in March hovers around 16°C (61°F), with a minimum of 5°C (41°F) and a maximum peaking at 30°C (86°F). Expect 93 mm (3.7 in) of precipitation spread across 14 days, contributing to an average humidity level of 84%. This blend of warmth and moisture creates a unique atmosphere for the month!

March Temperature in San Diego

In March in San Diego, the average temperature is 16°C (61°F). Maximum temperatures can reach 30°C (86°F), while minima can drop as low as 5°C (41°F). This variety in temperatures makes it a great time for travelers to dress in layers and enjoy a range of outdoor activities.

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

The chart illustrates March 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, March typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (86°F) and lows dropping to around 5°C (41°F).

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

March Precipitation in San Diego

In San Diego, in March, the precipitation amount is 93 mm (3.7 in) over the course of 14 days.

March Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, 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 Diego, March typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 14 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 Diego

In San Diego in March, humidity is 84%. With an average temperature of 16°C (61°F), this humidity feels like a blanket of warmth, making travel slightly sticky but overall comfortable, as long as you stay hydrated and take breaks in the shade.

March Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, 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 Diego is approximately 84%, 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 Diego

In San Diego in March, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Diego.

Maximum UV Index Levels in San Diego for March

The chart shows the monthly maximum UV Index (UVI) for San Diego 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 Diego typically reaches 13, which falls under the extreme exposure category.

Data source: San Diego 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 Diego Compares to Other Months

Weather in San Diego varies notably across the year, with each month offering distinct climate conditions. This page compares March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	88 mm (3.5 inches)	88%	very high
February Weather	15°C (58°F)	64 mm (2.5 inches)	86%	extreme
March Weather	16°C (61°F)	93 mm (3.7 inches)	84%	extreme
April Weather	18°C (65°F)	133 mm (5.2 inches)	81%	extreme
May Weather	19°C (67°F)	190 mm (7.5 inches)	82%	extreme
June Weather	19°C (66°F)	262 mm (10.3 inches)	81%	extreme
July Weather	18°C (65°F)	210 mm (8.3 inches)	81%	extreme
August Weather	18°C (65°F)	291 mm (11.4 inches)	82%	extreme
September Weather	18°C (65°F)	339 mm (13.3 inches)	86%	extreme
October Weather	17°C (63°F)	217 mm (8.5 inches)	90%	extreme
November Weather	15°C (59°F)	111 mm (4.4 inches)	91%	very high
December Weather	13°C (57°F)	51 mm (2.0 inches)	91%	very high