Pack or skip
Insect repellent for San Antonio in September
Verdict
Pack it
Warm (91°F) plus 7 rainy days = mosquito conditions.
Why
San Antonio in September averages highs of 91°F, lows of 70°F, 7 rainy days.
That climate means insect repellent earns its space in the bag. Warm (91°F) plus 7 rainy days = mosquito conditions.