December weather forecast
Delray Beach, FL

The strip of Delray Beach in Florida and the vast neon-lit city front
The strip of Delray Beach in Florida and the vast neon-lit city front

Weather in December

The first month of the winter, December, is also a moderately hot month in Delray Beach, Florida, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 75°F (23.9°C).

Temperature

In Delray Beach, the average high-temperature in December is relatively the same as in November - a still warm 75°F (23.9°C). In December, in Delray Beach, the average low-temperature is 68.2°F (20.1°C).

Humidity

The months with the highest humidity in Delray Beach are June, September and December, with an average relative humidity of 75%.

Rainfall

In Delray Beach, during December, the rain falls for 15.6 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 229 rainfall days, and 46.46" (1180mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature in Delray Beach is 76.1°F (24.5°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.1°F (24.5°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 in Delray Beach, with an average of 10h and 31min of daylight.
On the first day of the month, sunrise is at 6:51 am and sunset at 5:27 pm. On the last day of December, sunrise is at 7:08 am and sunset at 5:38 pm EST.

Sunshine

January and December, with an average of 6.1h of sunshine, are months with the least sunshine in Delray Beach, Florida.

UV index

In December, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 6 in December transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What are the most humid months in Delray Beach?

The months with the highest humidity in Delray Beach are June, September and December, with an average relative humidity of 75%.

What is the average humidity in December in Delray Beach?

In Delray Beach, Florida, the average relative humidity in December is 75%.

How many days does it rain in December in Delray Beach?

In Delray Beach, Florida, in December, during 15.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

What is the water temperature in December in Delray Beach?

In December, the average ocean temperature in Delray Beach is 76.1°F (24.5°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.1°F (24.5°C) water.

What is the month with the shortest days in Delray Beach?

With an average of 10h and 31min of daylight, December has the shortest days of the year in Delray Beach, Florida.

What is the average length of the day in December in Delray Beach?

In December, the average day length is 10h and 31min.

When are sunrise and sunset in December in Delray Beach?

On the first day of December in Delray Beach, sunrise is at 6:51 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:38 pm EST.

What is the month with the least sunshine in Delray Beach?

January and December, with an average of 6.1h of sunshine, are months with the least sunshine in Delray Beach, Florida.

How long on average sun shines in December in Delray Beach?

In Delray Beach, the average sunshine duration in December is 6.1h.

What is the UV index intensity in December in Delray Beach?

In Delray Beach, Florida, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in December
Delray Beach, FL

Average temperature in December - Delray Beach, FL
  • Average high temperature in December: 75°F

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in December: 68.2°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

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Average pressure in December
Delray Beach, FL

Average pressure in December - Delray Beach, FL
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

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Average wind speed in December
Delray Beach, FL

Average wind speed in December - Delray Beach, FL
  • Average wind speed in December: 11mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in December
Delray Beach, FL

Average humidity in December - Delray Beach, FL
  • Average humidity in December: 75%

The months with the highest relative humidity are June, September and December (75%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in December
Delray Beach, FL

Average rainfall in December - Delray Beach, FL
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in December
Delray Beach, FL

Average rainfall days in December - Delray Beach, FL
  • Average rainfall days in December: 15.6 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (12.6 days).

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Average sea temperature in December
Delray Beach, FL

Average sea temperature in December - Delray Beach, FL
  • Average sea temperature in December: 76.1°F

The best month for swimming (with the highest average sea temperature) is August (86.3°F).
The coldest months (with the lowest average sea temperature) are January and February (74.2°F).

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Average daylight in December /
Average sunshine in December
Delray Beach, FL

Average daylight in December / Average sunshine in December - Delray Beach, FL
  • Average daylight in December: 10h and 31min

The month with the longest days is June (Average daylight: 13h and 46min).
The month with the shortest days is December (Average daylight: 10h and 31min).

  • Average sunshine in December: 6h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 6min).

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Average sunshine days in December
Delray Beach, FL

Average sunshine days in December - Delray Beach, FL
  • Average sunshine days in December: 11 days

The month with the most sunshine days is March (14.2 days).
The month with the least sunshine days is September (2.5 days).

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Average UV index in December
Delray Beach, FL

Average UV index in December - Delray Beach, FL
  • Average UV index in December: 6

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

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Average cloud cover in December
Delray Beach, FL

Average cloud cover in December - Delray Beach, FL
  • Average cloud cover in December: 36

The months with the most cloud cover are January, October, November and December (Cloud cover 36).
The months with the least cloud cover are April, May and July (Cloud cover 29).

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Average visibility in December
Delray Beach, FL

Average visibility in December - Delray Beach, 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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