December weather forecast and climate
Bay Harbor Islands, FL

Weather in December

December, the first month of the winter, in Bay Harbor Islands, is still a warm month, with temperature in the range of an average low of 68.4°F (20.2°C) and an average high of 75.7°F (24.3°C).

Temperature

In Bay Harbor Islands, the average high-temperature is practically the same as in November - a still warm 75.7°F (24.3°C). In Bay Harbor Islands, Florida, in December, the average low-temperature is 68.4°F (20.2°C).

Humidity

With an average relative humidity of 75%, December is the most humid month in Bay Harbor Islands.

Rainfall

In Bay Harbor Islands, during 8.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, in Bay Harbor Islands, Florida, there are 157 rainfall days, and 11.34" (288mm) of precipitation is accumulated.

Snowfall

In Bay Harbor Islands snow does not fall in January through August, October through December.

Ocean temperature

In Bay Harbor Islands, the average seawater temperature is 76.5°F (24.7°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.5°F (24.7°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

December has the shortest days of the year, with an average of 10.5h of daylight.

Sunshine

With an average of 6.3h of sunshine, December has the least sunshine of the year in Bay Harbor Islands, Florida.

UV index

The average daily maximum UV index in Bay Harbor Islands is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in December in Bay Harbor Islands?

In December, in Bay Harbor Islands, Florida, the average high-temperature is 75.7°F (24.3°C), and the average low-temperature is 68.4°F (20.2°C).

What is the most humid month in Bay Harbor Islands?

With an average relative humidity of 75%, December is the most humid month in Bay Harbor Islands.

What is the average humidity in December in Bay Harbor Islands?

In December, the average relative humidity in Bay Harbor Islands is 75%.

How much does it rain in Bay Harbor Islands in December?

In Bay Harbor Islands, during December, the rain falls for 8.6 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow in Bay Harbor Islands?

January through August, October through December are months without snowfall in Bay Harbor Islands.

What is the water temperature in December in Bay Harbor Islands?

In Bay Harbor Islands, Florida, in December, the average water temperature is 76.5°F (24.7°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.5°F (24.7°C) water.

What is the month with the shortest days in Bay Harbor Islands?

The month with the shortest days in Bay Harbor Islands is December, with an average of 10.5h of daylight.

What is the average length of the day in December in Bay Harbor Islands?

In December, the average length of the day in Bay Harbor Islands is 10.5h.

What is the month with the least sunshine in Bay Harbor Islands?

The month with the least sunshine is December, with an average of 6.3h of sunshine.

How many hours of sunshine does Bay Harbor Islands have in December?

In December, the average sunshine in Bay Harbor Islands is 6.3h.

What is the UV index reading in December in Bay Harbor Islands?

In Bay Harbor Islands, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Bay Harbor Islands, FL

Average temperature in December - Bay Harbor Islands, FL
  • Average high temperature in December: 75.7°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (73°F).

  • Average low temperature in December: 68.4°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64°F).

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Average pressure in December
Bay Harbor Islands, FL

Average pressure in December - Bay Harbor Islands, FL
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.95").

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Average wind speed in December
Bay Harbor Islands, FL

Average wind speed in December - Bay Harbor Islands, FL
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

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Average humidity in December
Bay Harbor Islands, FL

Average humidity in December - Bay Harbor Islands, FL
  • Average humidity in December: 75%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).

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Average rainfall in December
Bay Harbor Islands, FL

Average rainfall in December - Bay Harbor Islands, FL
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in December
Bay Harbor Islands, FL

Average rainfall days in December - Bay Harbor Islands, FL
  • Average rainfall days in December: 8.6 days

The month with the highest number of rainy days is September (21.7 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in December
Bay Harbor Islands, FL

Average snowfall in December - Bay Harbor Islands, FL
  • Average snowfall in December: 0"

The month with the highest snowfall is September (0.04").
Months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").

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Average snowfall days in December
Bay Harbor Islands, FL

Average snowfall days in December - Bay Harbor Islands, FL
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is September (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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Average sea temperature in December
Bay Harbor Islands, FL

Average sea temperature in December - Bay Harbor Islands, FL
  • Average sea temperature in December: 76.4°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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Average daylight in December /
Average sunshine in December
Bay Harbor Islands, FL

Average daylight in December / Average sunshine in December - Bay Harbor Islands, FL
  • Average daylight in December: 10.5h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in December: 6.3h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.3h).

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Average sunshine days in December
Bay Harbor Islands, FL

Average sunshine days in December - Bay Harbor Islands, FL
  • Average sunshine days in December: 17 days

The month with the most sunshine days is March (20.3 days).
The month with the least sunshine days is September (4.4 days).

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Average UV index in December
Bay Harbor Islands, FL

Average UV index in December - Bay Harbor Islands, FL
  • Average UV index in December: 6

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in December
Bay Harbor Islands, FL

Average cloud cover in December - Bay Harbor Islands, FL
  • Average cloud cover in December: 32

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 27).

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Average visibility in December
Bay Harbor Islands, FL

Average visibility in December - Bay Harbor Islands, FL
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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