Weather in Charleston in January 2026
- January is usually the coldest month of the year in Charleston;
- January is usually the driest month of the year in Charleston
Average weather
Average temperature in Charleston in January
The temperature in January is +64°F on average, with a range between a maximum of +75°F during the day and a minimum of +32°F at night.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +66°F to +68°F.
Is Charleston warm or cold in January?
Charleston is typically mild in January.
Maximum temperatures go down compared to the previous month from +61°F to +59°F. The minimum temperature also goes down from +45°F to +43°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
January is the coldest month in Charleston, here is the comparison with other months:
Climate in Charleston in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +61°F | +59°F | +63°F | ||||
| Min. temperature | ||||||
| +10°F | +10°F | +18°F | ||||
| Max. temperature | ||||||
| +81°F | +79°F | +84°F | ||||
| Rainfall | ||||||
| 78 mm | 80 mm | 86 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 76% | 73% | 74% | ||||
| Air pressure | ||||||
| 1020 HPa | 1019 HPa | 1019 HPa | ||||
| Sunny days | ||||||
| 9 | 9 | 8 | ||||
| Cloudy days | ||||||
| 10 | 10 | 9 | ||||
| Rainy days | ||||||
| 11 | 11 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
January often has better weather than December. It’s getting colder in January. From +61°F in the day, the average maximum temperature lowers to +59°F. Prepare for more rain. Average rainfall goes from 78 mm to 80 mm. It feels drier, as humidity decreases from 76% to 73%. The average wind speed doesn’t change much during January, staying around 3 m/s. The amount of sunny days stay about the same, averaging 9 sunny days during the month.
February brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Charleston is gradually decreasing during January, going from 2 m/s to 1 m/s over the course of the month.
Rain
Snow
January is one of the snowiest months in Charleston.
Here’s how January is compared with other months in the amount of snow, total mm:
How was the weather last January in Charleston?
Climate Change Over the Years
The climate in Charleston in January has not changed that much over the last 43 years.
The average temperature was the lowest in 1988 (+72°F) and the highest in 2012 (+77°F). The driest year was 2011 with only 770 mm of rainfall, and the wettest year was 2024 with 2044 mm.
FAQ
Is January a good time to visit Charleston?
Can you sunbathe in Charleston in January?
Is Charleston rainy in January?
Is it sunny in Charleston in January?
Other cities in USA
Monthly weather in Charleston
Source of the data
For this page, we’ve looked at the typical weather in Charleston, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
