Will I be cold?
Will I be cold in Jacksonville in September?
Verdict
No — No, comfortable.
Lows stay near 70°F — you won't be reaching for the puffer.
Day vs. night
Day
87°F
Hot
Prioritize shade, hydration, and a brim.
Night
70°F
Comfortable
Comfortable outside without an extra layer.
Why
Jacksonville in September averages highs of 87°F, lows of 70°F, 12 rainy days.
You can pack for the daytime temps and not worry about the evening dip.
Nearby months
Packing pointers
Best shoes
Boots & insulated picks for Jacksonville in September →