San Antonio Climate and Average Weather
Climate of San Antonio: average temperatures, rainfall and seasons month by month.
Climate in San Antonio month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 61° | 42° | 2,4 in | ★★★☆☆ |
| February | 71° | 50° | 1,9 in | ★★★★☆ |
| March | 80° | 58° | 3,1 in | ★★★★☆ |
| April | 82° | 64° | 6,1 in | ★★★☆☆ |
| May | 88° | 69° | 7,7 in | ★★★☆☆ |
| June | 92° | 75° | 5,2 in | ★★★☆☆ |
| July | 93° | 75° | 5,8 in | ★★★☆☆ |
| August | 99° | 78° | 0,7 in | ★★★★☆ |
| September | 93° | 74° | 1,5 in | ★★★★☆ |
| October | 86° | 66° | 3,3 in | ★★★★☆ |
| November | 74° | 56° | 2,0 in | ★★★★☆ |
| December | 69° | 50° | 1,6 in | ★★★★☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in San Antonio
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How San Antonio compares with nearby places
Annual averages, and the difference against San Antonio.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Bexar County | 0 mi | 72°F | about the same | 41 in |
| Austin-Bergstrom International Airport | 73 mi | 71°F | 33°F cooler | 43 in |
| Travis County | 74 mi | 71°F | 33°F cooler | 44 in |
| Austin | 74 mi | 71°F | 33°F cooler | 44 in |
| Area Code 512 | 74 mi | 71°F | 33°F cooler | 44 in |
Best time to visit San Antonio
Go in February, March, August, September, October, November and December. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: April, May and July - expect the least comfortable mix of heat, cold or rain.
What this means for San Antonio
Today is slightly warmer than average for August. The forecast high of 102°F is 3.1°F above the 99°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 69°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid April, May and July - historically the least comfortable months here.
Summary
San Antonio is a city in Texas. San Antonio is known for The Alamo and River Walk. It has a population of about 1.5 million.
Right now it is 82°F (28°C) in San Antonio with clear. It feels like 89°F. Today runs from 79°F to 102°F. Chance of precipitation is 1%. Sightseeing conditions score 9.3/10 - excellent - go now.
The best time to visit San Antonio is February, March, August, September, October, November and December. The climate is temperate. April, May and July tend to be the least comfortable months. August is the warmest month with average highs near 99°F, while January is the coldest with lows near 42°F.
The closest major airport is Austin-Bergstrom International Airport (AUS), about 73 mi away. Nearby highlights include Enchanted Rock State Natural Area.
In plain terms. Today is slightly warmer than average for August. The forecast high of 102°F is 3.1°F above the 99°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. swimming is the strongest bet in San Antonio today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about San Antonio
| Type | City |
|---|---|
| State | Texas |
| Country | United States |
| Continent | North America |
| Coordinates | 29°25′26.8″N 98°29′37″W (29.4241, -98.4936) |
| Population | 1.470.000 |
| Known for | The Alamo and River Walk |
| Local time | 7:49 AM (UTC-05:00) |
| Best months | February, March, August, September, October, November and December |
| Climate | Temperate |
Weather map for San Antonio
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore San Antonio
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is San Antonio?
San Antonio is a city in Texas. Its coordinates are 29.4241, -98.4936. It lies in North America.
What is the weather like in San Antonio right now?
It is currently 82°F (28°C) with clear. Humidity is 74% and wind is 6 mph.
When is the best time to visit San Antonio?
February, March, August, September, October, November and December offer the most comfortable conditions in San Antonio, which has a temperate climate. April, May and July are usually the hardest months for outdoor plans.
What time zone is San Antonio in?
San Antonio observes America/Chicago (UTC-05:00). The local time is 7:49 AM.
How many people live in San Antonio?
San Antonio has a population of approximately 1.5 million.
What is the nearest airport to San Antonio?
The closest airports are Austin-Bergstrom International Airport (AUS), 73 mi away, George Bush Intercontinental Airport (IAH), 193 mi away and Dallas/Fort Worth International Airport (DFW), 255 mi away.
What are the top things to do in San Antonio?
Popular options include Enchanted Rock State Natural Area.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 7:49 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
