January 20 is generally a great time to visit Charleston. While there is a slight chance of rain (24%), showers are usually brief. Expect comfortable 13°C weather. It's a lively time to explore Charleston, with most attractions operating at full capacity. Note: January 20 is Martin Luther King, Jr. Day in Charleston, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Charleston
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Charleston Weather Forecast for January 20
"Mild & Comfortable. Expect average highs of 13.4°C. 24% chance of snow."
What to Wear in Charleston in January
Based on historical data for January 20, Charleston typically experiences temperatures between 5.4°C and 13.4°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (24% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Charleston
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
13.4°C
Daytime Peak
Average Low
5.4°C
Nighttime Low
Feels Like
12.7°C
🌤️ Feels accurate
Snow Chance
24%
Avg 1.3mm if it snows
Snowfall
0.1 cm
~24% chance
Pressure
1020.3 hPa
Medium volatility
Charleston Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 200 min to burn
Type III-IV
🟡 300 min to burn
Type V-VI
🟢 500 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
8.2°C
Dry air
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Holiday
Martin Luther King, Jr. Day
Flight Traffic
Busy
60/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~82
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Charleston
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:22
☀️ Noon
12:31
🌇 Sunset
17:41
⏱️ Daylight
10h 19m
Wind Speed
20.8 km/h
Moderate wind
Sunshine
7.0 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Charleston
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Charleston
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
High pressure may reduce activity.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Charleston on January 20 averages 13.4°C with a 24% precipitation probability. Wedding/Outdoor Event Score: 83/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Charleston Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
January 13
14.8°C • 18% rain
Score
92
January 14
14.8°C • 18% rain
Score
92
January 15
14.4°C • 17% rain
Score
90
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (January 20) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Charleston Worth Visiting on January 20?
Planning a trip to Charleston on January 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 13.4°C with a 24% historical precipitation risk.
🎉 Local Event: The date coincides with Martin Luther King, Jr. Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 82 landing slots available daily during this period, indicating manageable crowd levels.
🌊 Coastal Conditions: Water temperature averages 10.8°C (polar plunge). Wave conditions are generally fun waves with heights around 0.71m.
📊 Historical Extremes: The hottest January 20 recorded in the last 30 years saw temperatures hit 22.1°C in 2017, while the coldest dropped to -0.2°C in 2016.