Temp
23° C
average
Rain
25 mm
per month
Sun
59 %
chance
Humidity
73 %
average
What’s the weather like in San Antonio in September?
September marks the beginning of autumn in San Antonio, Texas. The weather starts to transition from the hot summer days to cooler temperatures. While the days can still be warm, it is generally much more pleasant compared to the scorching heat of the summer months.
Average Daily Temperatures
In September, San Antonio experiences average daily temperatures ranging from 71°F (22°C) to 90°F (32°C). The month typically starts with warmer temperatures, gradually cooling down as it progresses. The evenings and early mornings tend to be cooler, with average lows ranging from 61°F (16°C) to 70°F (21°C).
Sunshine and Rainfall
September in San Antonio is characterized by plenty of sunshine. The city enjoys an average of 10 hours of sunlight per day, providing ample opportunity to explore outdoor attractions and engage in various activities. However, it is still essential to wear sunscreen and stay hydrated due to the sun’s intensity.
While the month is generally dry, there is still a chance of rain in September. The average rainfall for September in San Antonio is around 2.67 inches (67.8 mm), spread across approximately four days throughout the month. These intermittent showers can bring temporary relief from the heat and help maintain the lushness of the city’s vegetation.
