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

The temperature hits its lowest levels in January, February and December, recording 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 December, the average ocean temperature is 71.6°F (22°C).
Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 71.6°F (22°C) waters might be just right. Remember, Olympic swimmers are used to waters between 77°F (25°C) and 82.4°F (28°C).

Daylight

December has the shortest days of the year, with an average of 10h and 30min of daylight.
On the first day of December, 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

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

UV index

With an average maximum UV index of 5, December is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in December, converts into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Heed this! UV intensity is much stronger when reflected off sand and water.