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 beginning of December records an average high-temperature of a still moderately hot 75.2°F (24°C), marking a negligible difference from November's 77.9°F (25.5°C). Stock Island documents an average low-temperature of 72.5°F (22.5°C) for the nights of December.Humidity
In Stock Island, the average relative humidity in December is 77%.Rainfall
In Stock Island, during December, the rain falls for 13.4 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 199.2 rainfall days, and 31.61" (803mm) of precipitation is accumulated.Ocean temperature
In December, the average ocean temperature is 74.5°F (23.6°C).Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 74.5°F (23.6°C) waters might be just right. Remember, Olympic swimmers are used to waters between 77°F (25°C) and 82.4°F (28°C).
Daylight
The month with the shortest days is December, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 5:37 pm. On the last day of December, sunrise is at 7:10 am and sunset at 5:49 pm EST.
Sunshine
With an average of 6.3h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 6 in December translates into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Alert! Sand and water increase UV exposure due to their reflective properties.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stock Island in December?
What is the average humidity in December?
How much does it rain in December?
What is the water temperature in December?
What is the month with the shortest days in Stock Island?
How many hours of daylight does Stock Island have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Stock Island, FL
- Average high temperature in December: 75.2°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in December: 72.5°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in December
Stock Island, FL
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are September and October (29.93"Hg).
Average wind speed in December
Stock Island, FL
- Average wind speed in December: 13.8mph
The windiest months (with the highest average wind speed) are January and November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity in December
Stock Island, FL
- Average humidity in December: 77%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in December
Stock Island, FL
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is September (5.12").
The driest month (with the least rainfall) is March (0.67").
Average rainfall days in December
Stock Island, FL
- Average rainfall days in December: 13.4 days
The months with the highest number of rainy days are August and September (23.1 days).
The month with the least rainy days is February (11 days).
Average sea temperature in December
Stock Island, FL
- Average sea temperature in December: 74.5°F
The best month for swimming (with the highest average sea temperature) is August (86.9°F).
The coldest months (with the lowest average sea temperature) are January and February (71.2°F).
Average daylight in December /
Average sunshine in December
Stock Island, FL
- Average daylight in December: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Stock Island, FL
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (4.5 days).
Average UV index in December
Stock Island, FL
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in December
Stock Island, FL
- Average cloud cover in December: 33
The month with the most cloud cover is January (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in December
Stock 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).
Stock Island, Florida, USA
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