December weather forecast
Marco Island, FL

Finally, with December's arrival, Marco Island welcomes the mild Floridian winter. In comparison to November, December maintains the same amount of rainfall but sees a further drop in minimum temperatures, registering a cool 57°F (13.9°C). December's climate makes the time perfect for outdoor experiences without the summer heat. Still, with shortened daylight hours, early activities or after sundown dinners in the chilly seaside air become the preferred pastime.

Temperature

January, February and December are identified as the coldest months in Marco Island, with an average high-temperature of 75.2°F (24°C).

Rainfall

In Marco Island, during December, the rain falls for 6 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 111 rainfall days, and 51.57" (1310mm) of precipitation is accumulated.

Ocean temperature

In Marco Island, in December, the average water temperature is 71.6°F (22°C).
Note: The cold tolerance of an individual, along with sunshine, wind, and the temperature of the environment, affects the enjoyment of swimming in 71.6°F (22°C) waters. (Olympic swimmers participate in waters ranging from 77°F (25°C) to 82.4°F (28°C).)

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year.
On the first day of December in Marco Island, sunrise is at 6:57 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:46 pm EST.

Sunshine

The months with the least sunshine are January, November and December, with an average of 7h of sunshine.

UV index

December is the month with the lowest UV index in Marco Island, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: During December, 5 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Notice! Sand and water reflections contribute to a stronger UV exposure.