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Location

San Antonio is commonly known as “the heart of Texas.” Its geographic pin in the American Southwest and South Central Texas contribute to some of its most valued assets. It serves as the seat of Bexar County and the bank for the San Antonio River. With the Edwards Plateau to the northwest and the Gulf Coastal Plains to the southeast, the city’s terrain is dotted with oak trees, mesquite, and cacti, which thrive under the clear and partly cloudy skies that prevail more than 60 percent of the time. San Antonio has characteristics of other western urban centers in that it has sparsely populated areas and a low-density rate outside of the city.

Described as “the place where the sunshine spends the winter”, San Antonio boasts an average annual temperature of 69.1 degrees. The warmest months of the year in San Antonio are July and August, with average temperatures of 95 degrees Fahrenheit (35 °C). The highest temperature ever recorded was 111 °F (44 °C) on September 5, 2000. On average, the coolest month of the year is January. The lowest temperature ever recorded was 0 °F (−18 °C) on January 31, 1949. In fact, San Antonio receives about a dozen sub-freezing nights each year and snow itself is very uncommon. According to the National Weather Service, there have only been 31 instances of snowfall in the city in the past 122 years (an average of once every four years).

The two main climate influences are tropical and desert. And because it lies near the western edge of the humid subtropical climate zone, temperatures alternate from dry to humid depending on the winds and the humidity brought on by the Gulf of Mexico. Cold fronts from Canada and tropical systems from the gulf bring rain to San Antonio, with most precipitation occurring in the late spring or early fall.

San Antonio is only 140 miles from the Gulf of Mexico and is approximately 701 feet above sea level. Because of its strategic location, San Antonio is the seventh largest city in the United States and the second largest in Texas. With a population of more than 1.3 million people, San Antonio also thrives as one of the fastest growing cities in the United States.

Its unique geographical position connects the east and west coasts, Canada, Mexico, Central and South America. Interstate highways connect San Antonio to the major Texas population centers and to primary border crossing points into Mexico including Laredo, Del Rio, Eagle Pass and the ports at Corpus Christi and Houston. Because of this combination of ideal location and quality infrastructure, more than 50 percent of the total goods flowing between the U.S. and Mexico travel through San Antonio before reaching their final destination. For more information on San Antonio’s major transportation routes, please visit our Transportation page.

Distances From San Antonio To Major Cities
Austin Northeast 80 Miles 128 Kilometers
Dallas Northeast 280 Miles 450 Kilometers
Houston East 200 Miles 322 Kilometers
Corpus Christi Southeast 145 Miles 233 Kilometers
Nuevo Laredo, Mexico Southwest 150 Miles 241 Kilometers
Monterrey, Mexico Southwest 295 Miles 474 Kilometers

With the Edwards Plateau to the northwest and the Gulf Coastal Plains to the southeast, the city’s terrain is dotted with oak trees, mesquite, and cacti, which thrive under the clear and partly cloudy skies that prevail more than 60 percent of the time. San Antonio has characteristics of other western urban centers in that it has sparsely populated areas and a low-density rate outside of the city.

San Antonio boasts an average annual temperature of 69.1 degrees and nearly 300 days of sunshine. The warmest months of the year in San Antonio are July and August, with average temperatures of 95 degrees Fahrenheit (35 °C). On average, the coolest month of the year is January. San Antonio receives about a dozen sub-freezing nights each year and snow in the area is very uncommon. According to the National Weather Service, there have only been 31 instances of snowfall in the city in the past 122 years (an average of once every four years).

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average high °F (°C) 62.1 (16.72) 67.1 (19.5) 74.3 (23.5) 80.4 (26.89) 86.0M (30) 91.4 (33) 94.6 (34.78) 94.7 (34.83) 90.0 (32.22) 82.0 (27.78) 71.4 (21.89) 64.0 (17.78)
Average low °F (°C) 38.6 (3.67) 42.4 (5.78) 49.9 (9.94) 56.9 (13.83) 65.5 (18.61) 71.6 (22) 74.0 (23.033) 73.6 (23.11) 68.8 (20.44) 59.4 (15.22) 48.6 (9.22) 40.8 (4.89)
Precipitation inches (mm) 1.66 (42.2) 1.75 (44.4) 1.89 (48) 2.60 (66) 4.72 (119.9) 4.30 (109.2) 2.03 (51.6) 2.57 (65.3) 3.00 (76.2) 3.86 (98) 2.58 (65.5) 1.96 (49.8)
Avg. precipitation days (≥ 0.01 in) 7.6 6.8 7.9 7.3 9.2 7.7 4.6 5.2 6.5 6.9 7.3 7.8
Sunshine hours 158.1 172.3 217.0 210.0 223.2 276.0 310.0 294.5 234.0 217.0 171.0 148.8
Sources: NOAA and The Weather Channel