San Antonio Weather Forecast
San Antonio weather: 81°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Will it rain in San Antonio?
No - rain is unlikely in San Antonio today.
Rain is very unlikely today - plans do not need a backup.
Over the next 7 days, about 0,4 in of precipitation is forecast.
The next 7 days carry about 2.7 times a normal week's rain for August (0,4 in against 0,2 in).
16-day forecast for San Antonio
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Aug 26 | ☁️ Overcast | 102° / 77° | 3% | 10 mph | 8 |
| Thu, Aug 27 | 🌦️ Drizzle | 100° / 78° | 39% · 0,1 in | 17 mph | 8 |
| Fri, Aug 28 | 🌦️ Drizzle | 102° / 78° | 39% · 0,1 in | 11 mph | 8 |
| Sat, Aug 29 | ⛅ Partly cloudy | 102° / 78° | 11% | 15 mph | 8 |
| Sun, Aug 30 | 🌤️ Mainly clear | 101° / 77° | 2% | 18 mph | 8 |
| Mon, Aug 31 | 🌦️ Light drizzle | 98° / 77° | 1% · 0,0 in | 12 mph | 7 |
| Tue, Sep 1 | ⛈️ Thunderstorm | 99° / 77° | 4% · 0,2 in | 15 mph | 9 |
| Wed, Sep 2 | ☁️ Overcast | 101° / 78° | 4% | 16 mph | 9 |
| Thu, Sep 3 | 🌤️ Mainly clear | 101° / 78° | 4% | 17 mph | 8 |
| Fri, Sep 4 | 🌤️ Mainly clear | 101° / 79° | 6% | 17 mph | 8 |
| Sat, Sep 5 | ⛅ Partly cloudy | 102° / 78° | 10% | 14 mph | 8 |
| Sun, Sep 6 | ☀️ Clear sky | 104° / 78° | 16% | 13 mph | 8 |
| Mon, Sep 7 | 🌦️ Light drizzle | 103° / 82° | 18% · 0,0 in | 15 mph | 8 |
| Tue, Sep 8 | 🌦️ Drizzle | 102° / 78° | 23% · 0,1 in | 15 mph | 8 |
| Wed, Sep 9 | 🌦️ Light drizzle | 98° / 80° | 14% · 0,0 in | 12 mph | 7 |
| Thu, Sep 10 | ☀️ Clear sky | -- / -- | 26% | -- | — |
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.
See the San Antonio forecast by time range
San Antonio weather - more answers
Explore San Antonio
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Weather 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 81°F (27°C) with clear. Humidity is 66% and wind is 10 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 4:13 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 26, 2026 at 4:13 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
