Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The advent of December sees the average high-temperature at a pleasant 70.3°F (21.3°C), subtly shifted from November's 74.3°F (23.5°C). In the month of December, the temperature generally rests at an average low of 60.6°F (15.9°C).Humidity
December is the most humid month, with an average relative humidity of 77%.Rainfall
In Harbor Bluffs, in December, it is raining for 7.4 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 149.9 rainfall days, and 16.18" (411mm) of precipitation is accumulated.Ocean temperature
In Harbor Bluffs, in December, the average water temperature is 68.5°F (20.3°C).Note: Swimming in water at 68.5°F (20.3°C) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
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 7:05 am and sunset at 5:35 pm. On the last day of December, sunrise is at 7:22 am and sunset at 5:46 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.5h of sunshine.UV index
The average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 5 in December translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the ocean temperature in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December in Harbor Bluffs?
What is the UV index reading in December?
Average temperature in December
Harbor Bluffs, FL
- Average high temperature in December: 70.3°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 (65.8°F).
- Average low temperature in December: 60.6°F
The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (55.9°F).
Average pressure in December
Harbor Bluffs, FL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in December
Harbor Bluffs, FL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are January and March (9.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Harbor Bluffs, FL
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Harbor Bluffs, FL
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is March (0.39").
Average rainfall days in December
Harbor Bluffs, FL
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is February (6.7 days).
Average sea temperature in December
Harbor Bluffs, FL
- Average sea temperature in December: 68.6°F
The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).
Average daylight in December /
Average sunshine in December
Harbor Bluffs, 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 3min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in December
Harbor Bluffs, FL
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is August (5 days).
Average UV index in December
Harbor Bluffs, 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).
Average cloud cover in December
Harbor Bluffs, FL
- Average cloud cover in December: 30
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility in December
Harbor Bluffs, 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).
Harbor Bluffs, Florida, USA
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