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 snowfall days 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
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's enjoyable 66.2°F (19°C) to a moderate 60.6°F (15.9°C). Throughout December, the average low-temperature records at a chilly 48°F (8.9°C).Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In December, in Seabrook Island, South Carolina, the rain falls for 7.5 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. In Seabrook Island, during the entire year, the rain falls for 118.7 days and collects up to 10.63" (270mm) of precipitation.Snowfall
January and December are months with snowfall. The months with the most snowfall days in Seabrook Island are January and December, with an average of 0.1 snowfall days.Daylight
December has the shortest days of the year in Seabrook Island, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:25 pm EST.
Sunshine
December has the least sunshine of the year in Seabrook Island, with an average of 5.7h of sunshine.UV index
The average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in December converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What are the temperatures in Seabrook Island in December?
What is the most humid month in Seabrook Island?
What is the average humidity in December in Seabrook Island?
How many days does it rain in December in Seabrook Island?
When does it snow the most in Seabrook Island?
When does it start snowing in Seabrook Island?
What is the month with the shortest days in Seabrook Island?
How many hours of daylight does Seabrook Island have in December?
What time are sunrise and sunset in December in Seabrook Island?
What is the month with the least sunshine in Seabrook Island?
How long on average sun shines in December in Seabrook Island?
What is the UV index intensity in December in Seabrook Island?
Average temperature in December
Seabrook Island, SC
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (57.2°F).
- Average low temperature in December: 48°F
The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).
Average pressure in December
Seabrook Island, SC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in December
Seabrook Island, SC
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Seabrook Island, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).
Average rainfall in December
Seabrook Island, SC
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in December
Seabrook Island, SC
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is August (16.9 days).
The month with the least rainy days is November (5.7 days).
Average snowfall days in December
Seabrook Island, SC
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Seabrook Island, SC
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Seabrook Island, SC
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (9.6 days).
Average UV index in December
Seabrook Island, SC
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Seabrook Island, SC
- Average cloud cover in December: 39
The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in December
Seabrook Island, SC
- 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).
Seabrook Island, South Carolina, USA
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