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March Weather in San Salvador, Mexico

Last updated: August 27, 2025

In March, the average temperature in San Salvador, Mexico hovers around 20°C (68°F), with a range that can dip to a cool 8°C (46°F) and peak at a warm 33°C (91°F). Expect around 39 mm (1.5 in) of precipitation spread over 9 days, and enjoy an average humidity level of 59%.

March Temperature in San Salvador

In March in San Salvador, the average temperature is 20°C (68°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 8°C (46°F). This pleasant climate makes San Salvador an ideal destination for travelers seeking mild weather and a variety of outdoor activities.

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

The chart illustrates March temperature patterns in San Salvador, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Salvador, March typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec646668737472727271706764
Data source: Temperature data for San Salvador 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 Salvador

In San Salvador in March, the precipitation amount is 39 mm (1.5 in) spread over 9 days.

March Precipitation Trends in San Salvador

The chart displays monthly precipitation patterns in San Salvador, 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 Salvador, March typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9950398117629211718924029816994
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Salvador

In San Salvador in March, humidity is 59%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, creating a slightly muggy atmosphere that can be a bit stifling for outdoor activities, yet refreshing during cooler, shaded moments, making it ideal for leisurely sightseeing and exploration in the early mornings or late afternoons.

March Average Humidity in San Salvador

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

In San Salvador 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 Salvador, you can check here.

Maximum UV Index Levels in San Salvador for March

The chart shows the monthly maximum UV Index (UVI) for San Salvador 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 Salvador typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414131312109
Data source: San Salvador 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 Salvador Compares to Other Months

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

This table compares monthly weather conditions in San Salvador, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)99 mm (3.9 inches)84%very high
February Weather19°C (66°F)50 mm (2.0 inches)73%extreme
March Weather20°C (68°F)39 mm (1.5 inches)59%extreme
April Weather23°C (73°F)81 mm (3.2 inches)52%extreme
May Weather23°C (74°F)175 mm (6.9 inches)53%extreme
June Weather22°C (72°F)292 mm (11.5 inches)55%extreme
July Weather22°C (72°F)117 mm (4.6 inches)61%extreme
August Weather22°C (72°F)189 mm (7.5 inches)71%extreme
September Weather22°C (71°F)240 mm (9.5 inches)77%extreme
October Weather21°C (70°F)298 mm (11.7 inches)78%extreme
November Weather19°C (67°F)169 mm (6.7 inches)82%very high
December Weather18°C (65°F)93 mm (3.7 inches)86%very high

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