San Antonio in September
Good time to visit
September offers the first glimmer of relief from summer heat while maintaining low crowds and prices. Still quite hot, but the psychological boost of heading toward fall makes it more tolerable than August.
Weather
September maintains summer heat but humidity begins its slow decline toward more comfortable levels. Temperatures remain high but feel slightly less oppressive than August. Late-month hints of fall bring hope for relief ahead.
35°C high23°C low7 rain days
Crowds & Cost
low crowds
~$130/day average
Events & Festivals
- •Labor Day weekend
- •Fall festival season begins
September Tips
- •Still hot but more bearable than August - early mornings are your friend
- •September rates remain low before fall season kicks in
- •Pack for full summer but watch for temperature drops late in month
All Months
March through May gives you perfect weather – highs in the 80s, cool evenings, and Fiesta season in April. This is peak tourist season, so book hotels early and expect crowds at the Alamo. Fall works beautifully too, especially October and November when temperatures drop to the 70s and humidity finally breaks. December through February stays mild – perfect for exploring the missions without sweating through your shirt. But here's the catch: summer is brutal. June through August sees daily highs over 100°F with crushing humidity. Locals retreat indoors from noon to 6pm. Winter brings occasional freezes that shut down the city – San Antonio doesn't handle ice well. Spring break crowds in March can overwhelm downtown, especially around the Riverwalk. For the best experience, aim for late October through early December or late February through March.
San Antonio Scores
Solo
7/10
Couples
7/10
Families
9/10
Adventure
4/10
Budget
8/10
Luxury
6/10
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