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
Saint Simons Island's December showcases an average high-temperature of a refreshing 64.4°F (18°C), hardly distinct from November's 68.9°F (20.5°C). Throughout the December nights, Saint Simons Island encounters a low-temperature of 52.9°F (11.6°C).Humidity
The months with the highest humidity are August and December, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. In Saint Simons Island, during the entire year, the rain falls for 163.3 days and collects up to 20.43" (519mm) of precipitation.Snowfall
February and December are months with snowfall. The months with the most snowfall days in Saint Simons Island, Georgia, are February and December, with an average of 0.1 snowfall days.Ocean temperature
In Saint Simons Island, the average seawater temperature in December is 63°F (17.2°C).Note: Swimming in water with a temperature of 63°F (17.2°C) is not a pleasurable experience for the majority. As the temperature falls below 69.8°F (21°C), it becomes increasingly hard to control one's breathing.
Daylight
December has the shortest days of the year, with an average of 10h and 12min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:33 pm EST.
Sunshine
With an average of 5.8h of sunshine, December has the least sunshine of the year.UV index
In December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in December translates into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the temperature in December in Saint Simons Island?
What are the most humid months in Saint Simons Island?
What is the average humidity in December in Saint Simons Island?
How much does it rain in Saint Simons Island in December?
What is the snowiest month in Saint Simons Island?
When does it start to snow in Saint Simons Island?
How cold is the water in December in Saint Simons Island?
What is the month with the shortest days in Saint Simons Island?
How many hours of daylight does Saint Simons Island have in December?
When are sunrise and sunset in December in Saint Simons Island?
What is the month with the least sunshine in Saint Simons Island?
How long on average sun shines in December in Saint Simons Island?
What is the UV index intensity in December in Saint Simons Island?
Average temperature in December
Saint Simons Island, GA
- Average high temperature in December: 64.4°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in December: 52.9°F
The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).
Average pressure in December
Saint Simons Island, GA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in December
Saint Simons Island, GA
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are January and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Saint Simons Island, GA
- Average humidity in December: 78%
The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Saint Simons Island, GA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Saint Simons Island, GA
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is January (8.2 days).
Average snowfall days in December
Saint Simons Island, GA
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Saint Simons Island, GA
- Average sea temperature in December: 63°F
The best month for swimming (with the highest average sea temperature) is August (83.4°F).
The coldest month (with the lowest average sea temperature) is February (58.5°F).
Average daylight in December /
Average sunshine in December
Saint Simons Island, GA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 5min
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 48min).
Average sunshine days in December
Saint Simons Island, GA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is March (20.1 days).
The month with the least sunshine days is August (4.2 days).
Average UV index in December
Saint Simons Island, GA
- Average UV index in December: 4
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 3).
Average cloud cover in December
Saint Simons Island, GA
- Average cloud cover in December: 38
The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are April, May, June and July (Cloud cover 27).
Average visibility in December
Saint Simons Island, GA
- 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).
Saint Simons Island, Georgia, USA
Weather forecast for your location
2. Allow the app to use your location
