Pack or skip
Insect repellent for Jacksonville in December
Verdict
Pack it
Warm (66°F) plus 8 rainy days = mosquito conditions.
Why
Jacksonville in December averages highs of 66°F, lows of 45°F, 8 rainy days.
That climate means insect repellent earns its space in the bag. Warm (66°F) plus 8 rainy days = mosquito conditions.