December weather forecast
Bluffton, SC

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The iconic historic Church of the Cross in Bluffton, South Carolina, set in a beautiful garden park
The iconic historic Church of the Cross in Bluffton, South Carolina, set in a beautiful garden park

Weather in December

December is marked by cooler temperatures, as winter firmly settles in Bluffton. Now the thermometer reflects readings between 50.9°F (10.5°C) and 61.5°F (16.4°C), clearly indicating the winter season's onset. Correspondingly, rainfall increases slightly to 2.32" (59mm), providing a touch of moisture to the cold air. As the days shorten and temperatures drop, residents experience a distinctive Southern winter. The year ends with a mix of celebration and anticipation for another cycle of Bluffton’s uniquely fascinating weather pattern.

Temperature

The weather during December records an average high-temperature of a still comfortable 61.5°F (16.4°C), closely mirroring the preceding month. The average temperature during December nights dips to a fresh 50.9°F (10.5°C).

Humidity

December is the most humid month in Bluffton, with an average relative humidity of 77%.

Rainfall

In Bluffton, South Carolina, in December, during 11.5 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Bluffton, during the entire year, the rain falls for 175.3 days and collects up to 32.28" (820mm) of precipitation.

Snowfall

In Bluffton, snow does not fall in February through December.

Daylight

December has the shortest days of the year, with an average of 10h and 6min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:29 pm EST.

Sunshine

With an average of 5.7h of sunshine, December has the least sunshine of the year.

UV index

The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 4 in December converts into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 13, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the average December temperature in Bluffton?

Bluffton in December has an average high-temperature of 61.5°F (16.4°C) and an average low-temperature of 50.9°F (10.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in September is appraised at 89.6°F (32°C).

What is the most humid month in Bluffton?

With an average relative humidity of 77%, December is the most humid month.

What is the average humidity in December in Bluffton?

The average relative humidity in December is 77%.

How much does it rain in Bluffton in December?

In Bluffton, South Carolina, in December, it is raining for 11.5 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Bluffton?

February through December are months without snowfall in Bluffton.

Does it snow in Bluffton in December?

In Bluffton, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Bluffton?

December has the shortest days of the year, with an average of 10h and 6min of daylight.

What is the average length of the day in December in Bluffton?

In December, the average day length is 10h and 5min.

What time are sunrise and sunset in December in Bluffton?

On the first day of December in Bluffton, sunrise is at 7:07 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:29 pm EST.

What is the month with the least sunshine in Bluffton?

December has the least sunshine of the year, with an average of 5.7h of sunshine.

How long on average sun shines in December in Bluffton?

In December, the average sunshine duration is 5.7h.

What is the UV index reading in December in Bluffton?

In December, the average daily maximum UV index in Bluffton, South Carolina, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Bluffton, SC

Average temperature in December - Bluffton, SC
  • Average high temperature in December: 61.5°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.4°F).

  • Average low temperature in December: 50.9°F

The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (46°F).

Average pressure in December
Bluffton, SC

Average pressure in December - Bluffton, 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
Bluffton, SC

Average wind speed in December - Bluffton, SC
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are January, March and April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

Average humidity in December
Bluffton, SC

Average humidity in December - Bluffton, SC
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is January (72%).

Average rainfall in December
Bluffton, SC

Average rainfall in December - Bluffton, SC
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is August (6.06").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in December
Bluffton, SC

Average rainfall days in December - Bluffton, SC
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Bluffton, SC

Average snowfall in December - Bluffton, SC
  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Bluffton, SC

Average snowfall days in December - Bluffton, SC
  • 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 daylight in December /
Average sunshine in December
Bluffton, SC

Average daylight in December / Average sunshine in December - Bluffton, SC
  • 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 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Bluffton, SC

Average sunshine days in December - Bluffton, SC
  • Average sunshine days in December: 17.2 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.8 days).

Average UV index in December
Bluffton, SC

Average UV index in December - Bluffton, 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
Bluffton, SC

Average cloud cover in December - Bluffton, SC
  • 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 June and July (Cloud cover 25).

Average visibility in December
Bluffton, SC

Average visibility in December - Bluffton, 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).

Bluffton, South Carolina, USA

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