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
The transition into December shows a subtle variation to a still enjoyable 61.7°F (16.5°C) from November's 66.7°F (19.3°C) in the average high-temperature. Tybee Island experiences an average low-temperature of 51.8°F (11°C) in month of December.Humidity
December is the most humid month, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 11.7 days. Throughout December, 3.58" (91mm) of precipitation is accumulated. Throughout the year, there are 166.3 rainfall days, and 36.89" (937mm) of precipitation is accumulated.Snowfall
In Tybee Island, snow does not fall in March through December.Ocean temperature
In December, the average ocean temperature is 61.5°F (16.4°C).Note: Swimming in water of 61.5°F (16.4°C) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:29 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
In Tybee Island, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during December translates into the following guidance:
Take precautions. Light skin individuals may get burned in less than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
When it does not snow?
Does it snow in December?
What is the ocean temperature in December?
What is the month with the shortest days?
How many hours of daylight does Tybee Island have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Tybee Island, GA
- Average high temperature in December: 61.7°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (57.7°F).
- Average low temperature in December: 51.8°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (47.1°F).
Average pressure in December
Tybee Island, GA
- 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
Tybee Island, GA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and November (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in December
Tybee Island, GA
- 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
Tybee Island, GA
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is August (6.02").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in December
Tybee Island, GA
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is August (22.5 days).
The month with the least rainy days is November (8 days).
Average snowfall days in December
Tybee Island, GA
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in December
Tybee Island, GA
- Average sea temperature in December: 61.5°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 (57.5°F).
Average daylight in December /
Average sunshine in December
Tybee Island, GA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h 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: 5h and 24min).
Average sunshine days in December
Tybee Island, GA
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is August (6 days).
Average UV index in December
Tybee Island, GA
- 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
Tybee Island, GA
- Average cloud cover in December: 40
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Tybee 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).
Tybee Island, Georgia, USA
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