March weather forecast
San Antonio, TX

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Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront

Weather in March

March brings a noticeable transition from the cool, short days of winter to the longer, warmer days of spring in San Antonio. The city starts to receive a larger amount of sunshine during the day, and the average hours of sunlight extend from 11.2 to 12 hours. However, rainfall inches also increase from 0.98in to 1.54in. March is marked by a further increase in maximum wind speed to 9.4mph (15.1km/h). Late blossoms characterize flora around the city, marking the onset of spring.

Temperature

With the onset of March, San Antonio experiences a subtle temperature shift, with the average high-temperature moving from a refreshing 65.8°F (18.8°C) in February to a pleasant 72.7°F (22.6°C). In the month of March, the temperature generally rests at an average low of 54.3°F (12.4°C).

Humidity

In San Antonio, the average relative humidity in March is 71%.

Rainfall

In March, in San Antonio, the rain falls for 14.1 days. Throughout March, 1.54" (39mm) of precipitation is accumulated. Throughout the year, there are 144.5 rainfall days, and 22.6" (574mm) of precipitation is accumulated.

Snowfall

In San Antonio, snow does not fall in March through November.

Daylight

In March, the average length of the day is 12h and 1min.
On the first day of the month, sunrise is at 6:58 am and sunset at 6:33 pm CST. On the last day of March, sunrise is at 7:23 am and sunset at 7:52 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

The average sunshine in March is 6.5h.

UV index

The average daily maximum UV index in March is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 5 in March transforms into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in March?

In March, in San Antonio, the average high-temperature is 72.7°F (22.6°C), and the average low-temperature is 54.3°F (12.4°C).

What is the average humidity in March?

In San Antonio, the average relative humidity in March is 71%.

How many days does it rain in March?

In San Antonio, in March, it is raining for 14.1 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow?

March through November are months without snowfall.

Does it snow in March?

In March, it doesn't snow. February is the latest month when it typically snows.

How many hours of daylight does San Antonio have in March?

In March, the average day length is 12h and 1min.

When are sunrise and sunset in March?

On the first day of March, sunrise is at 6:58 am and sunset at 6:33 pm CST. On the last day of the month, sunrise is at 7:23 am and sunset at 7:52 pm CDT.

When does Daylight Saving Time (DST) start in March?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

In San Antonio, Texas, the average sunshine duration in March is 6.5h.

How high is the UV index in March?

In San Antonio, the average daily maximum UV index in March is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
San Antonio, TX

Average temperature in March - San Antonio, TX
  • Average high temperature in March: 72.7°F

The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.7°F).

  • Average low temperature in March: 54.3°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in March
San Antonio, TX

Average pressure in March - San Antonio, TX
  • Average pressure in March: 30.01"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in March
San Antonio, TX

Average wind speed in March - San Antonio, TX
  • Average wind speed in March: 8.8mph

The windiest month (with the highest average wind speed) is May (9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

Average humidity in March
San Antonio, TX

Average humidity in March - San Antonio, TX
  • Average humidity in March: 71%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).

Average rainfall in March
San Antonio, TX

Average rainfall in March - San Antonio, TX
  • Average rainfall in March: 1.54"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.98").

Average rainfall days in March
San Antonio, TX

Average rainfall days in March - San Antonio, TX
  • Average rainfall days in March: 14.1 days

The month with the highest number of rainy days is September (17 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in March
San Antonio, TX

Average snowfall in March - San Antonio, TX
  • Average snowfall in March: 0"

The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in March
San Antonio, TX

Average snowfall days in March - San Antonio, TX
  • Average snowfall days in March: 0 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in March /
Average sunshine in March
San Antonio, TX

Average daylight in March / Average sunshine in March - San Antonio, TX
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in March: 6h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in March
San Antonio, TX

Average sunshine days in March - San Antonio, TX
  • Average sunshine days in March: 13.9 days

The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and September (11.8 days).

Average UV index in March
San Antonio, TX

Average UV index in March - San Antonio, TX
  • Average UV index in March: 5

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in March
San Antonio, TX

Average cloud cover in March - San Antonio, TX
  • Average cloud cover in March: 47

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in March
San Antonio, TX

Average visibility in March - San Antonio, TX
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

San Antonio, Texas, USA

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