Key Biscayne Weather in December

In Key Biscayne, December brings high daytime temperatures around 26°C (79°F), with nights cooling to 19°C (66°F). Expect quite a bit of rainfall this month.

Rainfall in Key Biscayne in December

Climate statistics over the past 30 years suggest around 10 days of rain, with 72 mm (2.8 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Key Biscayne in December

Key Biscayne in December is worth a visit. The temperature is excellent, with 26°C (79°F) during the day and 19°C (66°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Key Biscayne in December

The month enjoys around 216 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Key Biscayne in December

Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in December

At 25°C (77°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March, November and December typically offer the best circumstances for Key Biscayne.