Charleston in December
7.1out of 10
Possible, with caveats
Mild: highs around 17°C. Some rain: about 8 rainy days.
17°CAvg high
8°CAvg low
8Rainy days (86 mm)
9:51 hDaylight
07:20Sunrise · 17:11 Sunset
Why this score
- Mild: highs around 17°C
- Some rain: about 8 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in December is fairly consistent from year to year (2.7 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 15°C | 6°C | 81 mm | 8 | – | – | 6.9 |
| February | 17°C | 8°C | 84 mm | 8 | – | – | 7.2 |
| March | 20°C | 11°C | 81 mm | 8 | – | – | 7.7 |
| April | 23°C | 15°C | 74 mm | 8 | – | – | 8.1 |
| May | 27°C | 19°C | 67 mm | 9 | – | – | 7.8 |
| June | 30°C | 23°C | 130 mm | 16 | – | – | 6.6 |
| July | 31°C | 25°C | 138 mm | 18 | – | – | 5.8 |
| August | 30°C | 24°C | 161 mm | 19 | – | – | 5.8 |
| September | 28°C | 22°C | 128 mm | 14 | – | – | 7.0 |
| October | 25°C | 16°C | 100 mm | 8 | – | – | 7.9 |
| November | 20°C | 11°C | 66 mm | 7 | – | – | 7.8 |
| December | 17°C | 8°C | 86 mm | 8 | – | – | 7.1 |
Frequently asked questions
How hot is Charleston in December?
Daytime highs average 17°C and nights about 8°C.
When is the best time to visit Charleston?
The best months are April, October, May, November.