March weather forecast
San Antonio, TX

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

The first month of the spring, March, is an agreeable month in San Antonio, Texas, with temperature in the range of an average high of 72.7°F (22.6°C) and an average low of 54.3°F (12.4°C).

Temperature

In San Antonio, Texas, the average high-temperature in March slightly increases, from an enjoyable 65.8°F (18.8°C) in February, to an agreeable 72.7°F (22.6°C). In March, in San Antonio, Texas, the average low-temperature is 54.3°F (12.4°C).

Humidity

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

Rainfall

In San Antonio, during March, the rain falls for 14.1 days and regularly aggregates up to 1.54" (39mm) of precipitation. In San Antonio, during the entire year, the rain falls for 144.5 days and collects up to 22.6" (574mm) of precipitation.

Snowfall

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

Daylight

In March, the average length of the day is 12h.

Sunshine

The average sunshine in March is 6.5h.

UV index

In March, the average daily maximum UV index in San Antonio is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in March interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in March in San Antonio?

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

How many days does it rain in March in San Antonio?

In San Antonio, in March, during 14.1 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow in San Antonio?

March through November are months without snowfall.

Does it snow in San Antonio in March?

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

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

The average length of the day in March in San Antonio is 12h.

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

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

How high is the UV index in March in San Antonio?

In March, the average daily maximum UV index in San Antonio is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in March
San Antonio, TX

Average temperature in March - San Antonio, TX
  • Average high temperature in March: 22.6°C

The warmest month (with the highest average high temperature) is August (35.9°C).
The month with the lowest average high temperature is January (16.5°C).

  • Average low temperature in March: 12.4°C

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).

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Average pressure in March
San Antonio, TX

Average pressure in March - San Antonio, TX
  • Average pressure in March: 1016.3mbar

The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in March
San Antonio, TX

Average wind speed in March - San Antonio, TX
  • Average wind speed in March: 14.1km/h

The windiest month (with the highest average wind speed) is May (14.5km/h).
The calmest month (with the lowest average wind speed) is September (10.5km/h).

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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%).

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Average rainfall in March
San Antonio, TX

Average rainfall in March - San Antonio, TX
  • Average rainfall in March: 39mm

The wettest month (with the highest rainfall) is May (93mm).
The driest month (with the least rainfall) is February (25mm).

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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).

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Average snowfall in March
San Antonio, TX

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

Months with the highest snowfall are January and February (2mm).
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in March
San Antonio, TX

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

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

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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

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in March: 6.5h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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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).
Months with the least sunshine days are May and September (11.8 days).

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Average UV index in March
San Antonio, TX

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

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).

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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).

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Average visibility in March
San Antonio, TX

Average visibility in March - San Antonio, TX
  • Average visibility in March: 9km

The month with the highest visibility is August (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).

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