Charleston (SC)
December
Weather in Charleston, South Carolina for December 2026
Your guide to Charleston weather in December - trends and predictions
In general, the average temperature in Charleston at the beginning of December is 14.2 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.8 °C by the end of December.
Charleston experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 150.5 mm.
Is December a good time to visit Charleston? check out the best time to travel to Charleston page.
✨ Is December a good time to visit Charleston? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
24
Dry days
7
Rainy days
0
Snow days
15°/8°
Temperatures
20 km/h
Avg max wind
68 %
Avg humidity
Charleston Weather December
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Temperatures trend during December in Charleston
See the weather trend as well as the moving average line
December weather in Charleston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Mist | 16° /9° | 0 mm | 3.3 | |
| Dec. 2 |  Moderate rain | 17° /10° | 15 mm | 3.3 | |
| Dec. 3 |  Light rain shower | 14° /9° | 1.9 mm | 3.2 | |
| Dec. 4 |  Overcast | 16° /6° | 0 mm | 3.2 | |
| Dec. 5 |  Light rain | 14° /8° | 5.8 mm | 3 | |
| Dec. 6 | Light rain | 11° /5° | 3.7 mm | 3 | |
| Dec. 7 | Light rain | 12° /4° | 2.7 mm | 3.1 | |
| Dec. 8 | Overcast | 14° /6° | 0 mm | 3 | |
| Dec. 9 | Patchy rain possible | 17° /9° | 1.8 mm | 3.1 | |
| Dec. 10 | Light rain | 20° /11° | 7.6 mm | 3.1 | |
| Dec. 11 | Light rain | 15° /8° | 7.7 mm | 3.1 | |
| Dec. 12 |  Sunny | 14° /5° | 0 mm | 3.1 | |
| Dec. 13 | Overcast | 15° /8° | 0 mm | 3.1 | |
| Dec. 14 | Overcast | 14° /7° | 0 mm | 3 | |
| Dec. 15 | Patchy rain possible | 11° /4° | 1.9 mm | 3 | |
| Dec. 16 | Light rain shower | 15° /7° | 1.1 mm | 3 | |
| Dec. 17 |  Heavy rain | 18° /12° | 34.4 mm | 3 | |
| Dec. 18 | Heavy rain | 18° /13° | 28.4 mm | 3 | |
| Dec. 19 | Moderate rain | 16° /10° | 11.2 mm | 3 | |
| Dec. 20 | Overcast | 14° /6° | 0 mm | 3 | |
| Dec. 21 | Overcast | 14° /5° | 0 mm | 3 | |
| Dec. 22 | Overcast | 12° /5° | 0 mm | 3 | |
| Dec. 23 | Overcast | 14° /8° | 0 mm | 3 | |
| Dec. 24 | Light rain | 16° /11° | 9.3 mm | 2 | |
| Dec. 25 | Light rain | 18° /13° | 6.3 mm | 3 | |
| Dec. 26 | Light rain | 16° /11° | 5.4 mm | 2 | |
| Dec. 27 | Overcast | 18° /13° | 0 mm | 3 | |
| Dec. 28 | Overcast | 17° /13° | 0 mm | 3 | |
| Dec. 29 | Light rain | 16° /12° | 5.1 mm | 3 | |
| Dec. 30 | Patchy rain possible | 13° /7° | 1.2 mm | 3 | |
| Dec. 31 | Sunny | 13° /4° | 0 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Charleston in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Charleston forecast closer to your planned date for the most up-to-date weather information.
Change Month
Charleston in December - FAQ
What are the expected maximum and minimum temperatures in Charleston during December?
During December, expect a variety of temperatures with highs around 15° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Charleston during December?
Significant rainfall exceeding 150.5 mm is expected in Charleston during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Charleston during December?
The average wind speed in Charleston during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Charleston
Explore the daily rainfall trends and prepare for Charlestons December weather 💧
Typically, Charleston has 7 rainy days in December with a total of 150.5 mm of rainfall.
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