December is a hot and slightly rainy time for sunbathing in Key Biscayne. December is a good month for swimming in Key Biscayne with warm sea temperatures. Consider visiting Key Biscayne in the months of January, March, November, December, for the best beach weather. Also consider one of our other suggestions for December.
The average maximum temperature in Key Biscayne in December is 26°. The average maximum temperature is 27° in the previous month and 25° in the next month.
The average temperature in Key Biscayne in December is 22°. The average temperature ranges is 24° in the previous month and 21° in the next month.
The average minimum temperature in Key Biscayne in December is 18°. The minimum temperature is 20° in the previous month and 16° in the next month.
The average day light hours per day in Key Biscayne in December are 10.5 and there are 7.1 hours of sunshine per day on average during December making it a quite sunny month with some cloud cover.
The ultraviolet index in Key Biscayne in December is typically 5.3 during December. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Key Biscayne in December is 24.8° which is warm and pleasant for relaxing and swimming for long periods.
The average total rainfall in Key Biscayne in December is 46.6cm and on average there are 9.2 rainy days in December making it a slightly wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Key Biscayne in December is 18° which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 19° in the previous month and 17° in the next month.
The average maximum relative humidity in Key Biscayne in December is typically 87.1%. The maximum relative humidity is 84.3% in the previous month and 86.3% in the next month.
The average relative humidity in Key Biscayne in December is typically 71%. The average relative humidity is 68.7% in the previous month and 69.6% in the next month.
The average maximum wind speed in Key Biscayne in December is typically 26kmh. The average maximum wind speed is 26kmh in the previous month and 26kmh in the next month.
The average wind speed in Key Biscayne in December is typically 12kmh. The average wind speed is 13kmh in the previous month and 12kmh in the next month.
The average wind direction in Key Biscayne in December is from the East-Northeast.
