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MexicoThe weather in September in San Antonio
It's hot in September in San Antonio with an average temperature of 34°C. Temperatures this month range from a low of 32°C to a high of 36°C. At night, you can expect temperatures between 24°C and 26°C.
Looking for sun? September isn’t a good month to be in San Antonio. 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, 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 39°C in 2020, San Antonio reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 19°C to a highest value of 29°C.
Rainfall amount
In September, there is an average of 113 mm of precipitation, spread over 14 days. The wind speed is around 2 Bft, mostly coming from the Southwest.
Daily weather in September for San Antonio
Click on any day in September to get detailed info about the usual weather on that day in San Antonio. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| San Antonio | New York | |
|---|---|---|
| Average temperature | 34°C | 27°C |
| Max. temperature | 36°C | 31°C |
| Min. temperature | 24°C | -5°C |
| Total precipitation | 113 mm | 57 mm |
| Rainy days | 14 days | 9 days |
Start of September
The month of September starts in San Antonio with hot temps, averaging around 34°C during the day and nights around 26°C.
Mid September
By mid-September, daytime temps rise to around 35°C, with nights around 26°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in San Antonio is around 35°C, while nighttime temps are about 25°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 9 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 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, 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
Temperature in September in San Antonio over the years
Precipitation charts
These charts show the average amount of precipitation in September in San Antonio, 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
Total precipitation in September in San Antonio over the years
Daily UV index in September in San Antonio
This chart shows the average daily UV index in September in San Antonio, 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
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Average weather in San Antonio by month
Click on a month below to see detailed weather info for San Antonio. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.