Pack or skip
Swimsuit for Denver in September
Verdict
Pack it
Highs around 77°F — pools, beaches, and rooftop bars.
Why
Denver in September averages highs of 77°F, lows of 48°F, 7 rainy days.
That climate means a swimsuit earns its space in the bag. Highs around 77°F — pools, beaches, and rooftop bars.