30YearWeather
Charleston in December
Charleston weather in December - United States
🌤️Mild & Comfortable

Charleston Weather in December

Plan your December trip to Charleston, United States. Based on 30 years of NASA data, expect temperatures of 16°C (high) to 8°C (low), with 21% rain probability and 8 hours of daily sunshine. The Coastal Waters averages 14°C in December. Great conditions with only 2 rainy days expected.

Avg High
16°C

Hottest around day 1

Avg Low
8°C

Coolest around day 25

Rainy Days
2days

21% avg rain chance

Sunshine
8hrs/day

Winter season

Sea Temperature in December

Coastal Waters(Ocean)

13.8°C

Monthly Average

Water Feel
🥶Polar Plunge

Consider a wetsuit for extended swimming

Swim Rating
❄️Cold water hazard

Based on average sea surface temperature

Body of Water
Coastal Waters

Ocean

Charleston coastline

Charleston December Weather Calendar

Click any day to see detailed weather information

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Charleston

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate
44/ 100
Traffic Index

Balanced traffic

Peak Daily Arrivals

0

slots per day

Peak

Aug

Low

Jan

Monthly Traffic Distribution

82
Jan
88
Feb
107
Mar
104
Apr
121
May
128
Jun
118
Jul
137
Aug
121
Sep
123
Oct
111
Nov
128
Dec
Traffic Level
Low Season

Key Connections

Atlanta Hartsfield Jackson (ATL)
Charlotte Douglas (CLT)
Chicago O'Hare (ORD)
Washington Ronald Reagan National (DCA)
New York John F Kennedy (JFK)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is December a Good Time to Visit Charleston?

👌Good option with minor considerations
Short Answer

Don't expect beach weather in Charleston's December: 13.8°C cold seas despite 16°C air temps. Coastal scenery remains beautiful, just pack warm layers.

Decision Factors

Peak tourist season

93% of annual peak - expect crowds and peak prices

Cold sea - swimming challenging

13.8°C sea temperature - Polar Plunge

Exceptional dining scene

15 Michelin-listed restaurants

Good For

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 15.8°C, 21% rain chance

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 88/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 13.8°C - too cold for comfortable swimming

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👴
    Elderly travelers

    76% humidity creates difficult conditions

930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Charleston in December averages 16°C with 21% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Charleston in December

What are the temperatures in Charleston in December?

Daytime highs average 16°C, nights drop to 8°C. Temperatures remain fairly consistent.

How many rainy days in Charleston in December?

Expect around 2 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Charleston in December?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is December peak season in Charleston?

This is shoulder season—moderate prices and manageable crowds.