Mild
Average highs are around 20°C, so days are mild rather than hot.
December verdict
Mixed for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 6h per day, enough for a balanced month. Rainfall averages 61mm, which is relatively low for holiday planning.

Monthly averages
Temp
20°C
Rain
61mm
Sun
6h
Weather score
47
Mixed
Mild
Average highs are around 20°C, so days are mild rather than hot.
Drier
Rainfall averages 61mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6h per day, enough for a balanced month.
Map
Compare Jacksonville, Florida, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
December20°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
December61mm average rain
December is one of Jacksonville's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December6 hours average sun
December is one of Jacksonville's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
December47 weather score
December scores below Jacksonville's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsApril to May
These months have the strongest weather score in the monthly averages.
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