Pack or skip
Thermal underwear for Sarasota in September
Verdict
Skip it
Lows near 75°F — you'll overheat.
Why
Sarasota in September averages highs of 91°F, lows of 75°F, 14 rainy days.
That climate means thermal underwear isn't pulling its weight. Lows near 75°F — you'll overheat.