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MexicoThe weather in September in San Antonio Texas
It's warm in September in San Antonio Texas with an average temperature of 28°C. Temperatures this month range from a low of 27°C to a high of 28°C. At night, you can expect temperatures between 13°C and 16°C.
Looking for sun? September isn’t a good month to be in San Antonio Texas. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for San Antonio Texas, Mexico. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2023, San Antonio Texas reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 22°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 7°C to a highest value of 18°C.
Rainfall amount
In September, there is an average of 106 mm of precipitation, spread over 13 days. The wind speed is around 3 Bft, mostly coming from the East.
Daily weather in September for San Antonio Texas
Click on any day in September to get detailed info about the usual weather on that day in San Antonio Texas. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| San Antonio Texas | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 28°C | 31°C |
| Min. temperature | 13°C | -5°C |
| Total precipitation | 106 mm | 57 mm |
| Rainy days | 13 days | 9 days |
Start of September
The month of September starts in San Antonio Texas with hot temps, averaging around 28°C during the day and nights around 16°C.
Mid September
By mid-September, daytime temps stay steady at around 28°C, with nights around 15°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in San Antonio Texas is around 28°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of San Antonio Texas for all months and discover the best travel time
Curious about the weather in other parts of Mexico? Check out the climate and weather for spots like Cancún, Mexico City, Playa del Carmen, or explore other destinations in Mexico.
Temperature charts
These charts show the average temperatures in September in San Antonio Texas, Mexico. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in San Antonio Texas
Temperature in September in San Antonio Texas over the years
Precipitation charts
These charts show the average amount of precipitation in September in San Antonio Texas, Mexico. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in San Antonio Texas
Total precipitation in September in San Antonio Texas over the years
Daily UV index in September in San Antonio Texas
This chart shows the average daily UV index in September in San Antonio Texas, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in San Antonio Texas
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Average weather in San Antonio Texas by month
Click on a month below to see detailed weather info for San Antonio Texas. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.