December weather forecast
Merritt Island, FL

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Weather in December

December, the first month of the winter in Merritt Island, is also an agreeable month, with an average temperature varying between 71.6°F (22°C) and 62.2°F (16.8°C).

Temperature

Transitioning from November to December, Merritt Island observes an average high-temperature of an agreeable 71.6°F (22°C), differing subtly from the previous month. The low-temperature average for Merritt Island during December stands at a comfortable 62.2°F (16.8°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Merritt Island, in December, during 12.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, in Merritt Island, there are 190.9 rainfall days, and 29.37" (746mm) of precipitation is accumulated.

Daylight

With an average of 10h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:57 am and sunset at 5:26 pm. On the last day of December, sunrise is at 7:14 am and sunset at 5:37 pm EST.

Sunshine

The average sunshine in December in Merritt Island is 6.2h.

UV index

In Merritt Island, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 5 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What is the temperature in December in Merritt Island?

During December, Merritt Island experiences an average high-temperature of 71.6°F (22°C) and a low-temperature of 62.2°F (16.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in October is estimated at 86°F (30°C).

What is the average humidity in December in Merritt Island?

The average relative humidity in December in Merritt Island is 76%.

How much does it rain in Merritt Island in December?

In Merritt Island, during December, the rain falls for 12.7 days and regularly aggregates up to 1.18" (30mm) of precipitation.

What is the month with the shortest days in Merritt Island?

With an average of 10h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Merritt Island have in December?

In December, the average day length in Merritt Island is 10h and 23min.

When are sunrise and sunset in December in Merritt Island?

On the first day of December, sunrise is at 6:57 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:37 pm EST.

How long on average sun shines in December in Merritt Island?

In Merritt Island, the average sunshine duration in December is 6.2h.

What is the UV index reading in December in Merritt Island?

The average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Merritt Island, FL

Average temperature in December - Merritt Island, FL
  • Average high temperature in December: 71.6°F

The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is January (68.4°F).

  • Average low temperature in December: 62.2°F

The month with the highest average low temperature is August (78.6°F).
The coldest month (with the lowest average low temperature) is January (57.7°F).

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Average pressure in December
Merritt Island, FL

Average pressure in December - Merritt Island, FL
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

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Average wind speed in December
Merritt Island, FL

Average wind speed in December - Merritt Island, FL
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are January and November (10mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

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Average humidity in December
Merritt Island, FL

Average humidity in December - Merritt Island, FL
  • Average humidity in December: 76%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in December
Merritt Island, FL

Average rainfall in December - Merritt Island, FL
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is August (5.12").
The driest month (with the least rainfall) is March (1.14").

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Average rainfall days in December
Merritt Island, FL

Average rainfall days in December - Merritt Island, FL
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is August (24.7 days).
The month with the least rainy days is February (9.6 days).

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Average daylight in December /
Average sunshine in December
Merritt Island, FL

Average daylight in December / Average sunshine in December - Merritt Island, FL
  • Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

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Average sunshine days in December
Merritt Island, FL

Average sunshine days in December - Merritt Island, FL
  • Average sunshine days in December: 14.3 days

The month with the most sunshine days is January (17.2 days).
The month with the least sunshine days is August (3.1 days).

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Average UV index in December
Merritt Island, FL

Average UV index in December - Merritt Island, FL
  • Average UV index in December: 5

The 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 4).

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Average cloud cover in December
Merritt Island, FL

Average cloud cover in December - Merritt Island, FL
  • Average cloud cover in December: 34

The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are April, May and July (Cloud cover 26).

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Average visibility in December
Merritt Island, FL

Average visibility in December - Merritt Island, FL
  • Average visibility in December: 6mi

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

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Merritt Island, Florida, USA

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