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 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
December's arrival brings an average high-temperature of a mild 60.6°F (15.9°C), demonstrating subtle variation from the preceding month. Folly Beach experiences a mean low-temperature of 51.1°F (10.6°C) during December.Humidity
December is the most humid month, with an average relative humidity of 78%.Rainfall
In Folly Beach, South Carolina, in December, during 6.2 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 113.3 rainfall days, and 10" (254mm) of precipitation is accumulated.Snowfall
January and December are months with snowfall in Folly Beach. December is the first month it typically snows in Folly Beach. Throughout December, there are 0.1 snowfall days. In Folly Beach, South Carolina, during the entire year, snow falls for 0.3 days.Ocean temperature
In Folly Beach, the average seawater temperature in December is 66.2°F (19°C).Note: Swimming in water that is 66.2°F (19°C) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:24 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.7h of sunshine.UV index
In Folly Beach, the average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the average maximum UV index of 4 translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Folly Beach in December?
What is the most humid month in Folly Beach?
What is the average humidity in December in Folly Beach?
How many days does it rain in December in Folly Beach?
When does it start to snow in Folly Beach?
What is the ocean temperature in December in Folly Beach?
What is the month with the shortest days in Folly Beach?
How many hours of daylight does Folly Beach have in December?
When is the sunrise / sunset in December in Folly Beach?
What is the month with the least sunshine in Folly Beach?
How long on average sun shines in December in Folly Beach?
What is the UV index reading in December in Folly Beach?
Average temperature in December
Folly Beach, SC
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in December: 51.1°F
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in December
Folly Beach, SC
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Folly Beach, SC
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in December
Folly Beach, SC
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January, March and October (73%).
Average rainfall in December
Folly Beach, SC
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Folly Beach, SC
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (5.2 days).
Average snowfall days in December
Folly Beach, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Folly Beach, SC
- Average sea temperature in December: 66.3°F
The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (61.9°F).
Average daylight in December /
Average sunshine in December
Folly Beach, SC
- Average daylight in December: 10h and 0min
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 0min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Folly Beach, SC
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in December
Folly Beach, 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
Folly Beach, SC
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in December
Folly Beach, 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).
Folly Beach, South Carolina, USA
Weather forecast for your location
2. Allow the app to use your location
