March Weather in San Diego de la Union, Mexico

Last updated: August 27, 2025

In March, the average temperature in San Diego de la Union, Mexico is a comfortable 18°C (64°F). However, be prepared for some variability, as temperatures can dip to a chilly 1°C (34°F) or soar to a hot 33°C (92°F). With an average precipitation amount of 10 mm (0.4 in) over 2 days, and humidity levels around 58%, it's a month that brings both warmth and the occasional shower. 🌦️

March Temperature in San Diego de la Union

In March in San Diego de la Union, the average temperature is 18°C (64°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 1°C (34°F). Be prepared for a range of temperatures, making it an ideal time for exploring the great outdoors.

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

The chart illustrates March temperature patterns in San Diego de la Union, 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 de la Union, March typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 1°C (34°F).

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

March Precipitation in San Diego de la Union

In San Diego de la Union in March, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

March Precipitation Trends in San Diego de la Union

The chart displays monthly precipitation patterns in San Diego de la Union, 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 de la Union, March typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 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 de la Union

In San Diego de la Union in March humidity is 58%. With an average temperature of 18°C (64°F), this humidity feels like a refreshing embrace, making it a comfortable time for traveling as you can enjoy outdoor explorations without feeling overly warm or sticky.

March Average Humidity in San Diego de la Union

This chart illustrates the average monthly humidity levels in San Diego de la Union, 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 de la Union is approximately 58%, 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 de la Union

In San Diego de la Union 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 Diego de la Union, you can check here.

Maximum UV Index Levels in San Diego de la Union for March

The chart shows the monthly maximum UV Index (UVI) for San Diego de la Union 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 de la Union typically reaches 14, which falls under the extreme exposure category.

Data source: San Diego de la Union 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 de la Union Compares to Other Months

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

This table compares monthly weather conditions in San Diego de la Union, 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)	5 mm (0.2 inches)	74%	very high
February Weather	15°C (60°F)	7 mm (0.3 inches)	65%	extreme
March Weather	18°C (64°F)	10 mm (0.4 inches)	58%	extreme
April Weather	20°C (69°F)	7 mm (0.3 inches)	58%	extreme
May Weather	22°C (71°F)	39 mm (1.5 inches)	67%	extreme
June Weather	20°C (69°F)	115 mm (4.5 inches)	76%	extreme
July Weather	19°C (67°F)	90 mm (3.5 inches)	67%	extreme
August Weather	20°C (68°F)	70 mm (2.8 inches)	68%	extreme
September Weather	19°C (66°F)	110 mm (4.3 inches)	81%	extreme
October Weather	17°C (63°F)	58 mm (2.3 inches)	83%	extreme
November Weather	15°C (59°F)	18 mm (0.7 inches)	84%	very high
December Weather	13°C (56°F)	5 mm (0.2 inches)	81%	very high