Will I be hot?
Will I be hot in Tampa in September?
Verdict
Yes — Yes, hot.
Highs push 90°F — sun exposure and hydration matter more than layering.
Day vs. night
Day
90°F
Hot
Prioritize shade, hydration, and a brim.
Night
74°F
Warm
Still warm enough for a T-shirt after dark.
Why
Tampa in September averages highs of 90°F, lows of 74°F, 14 rainy days.
Prioritize breathable fabrics, sun protection, and hydration over any kind of layering piece.