Nestled along the coast of South Carolina, Charleston boasts a pleasant climate that attracts visitors year-round.
Charleston experiences warm summers and mild winters, making it a great destination for those looking to escape more extreme weather elsewhere.
In January, the coldest month, temperatures usually range between 38.9°F and 60.2°F, ensuring a mild winter experience.
Summers in Charleston can be quite warm, with temperatures often reaching the high 80s to low 90s Fahrenheit.
May is the brightest month, averaging 6.6 kWh of sunshine each day. Conversely, December is the darkest month, with an average of 2.8 kWh.
Despite the heat, there’s always a gentle breeze, especially in March, which has an average wind speed of 6.1 miles per hour.
Rainfall in Charleston is fairly consistent throughout the year, keeping the city’s landscapes lush and green.
Snowfall is incredibly rare, with only 0.16 inches of snow falling on an average of 0.6 days per year.
This mild weather pattern makes Charleston a charming spot for tourists and locals alike.
For more details, you can check out the comprehensive weather data on Weather Atlas.
Average Temperature In Charleston, South Carolina
Charleston, South Carolina, has a humid subtropical climate with significant seasonal variation in temperatures.
Winter Months:
- January: Average highs around 60°F and lows near 38°F.
- February: Temperatures rise slightly with highs about 64°F and lows close to 43°F.
- March: The coldest month for water temperatures, averaging 64°F.
Spring to Summer:
- April: Average highs in the 70s°F and lows in the 50s°F.
- May: Temperatures reach highs of about 82°F with lows near 63°F.
- June: Warmer temperatures with highs around 87°F and lows near 72°F.
- July: Typically the hottest month, with average highs of 89°F and lows around 75°F.
- August: Also warm, with average daily highs near 88°F and lows around 75°F. It’s also the month with the warmest water, averaging 83°F.
Fall Months:
- September: Average highs drop to around 84°F and lows around 69°F.
- October: Cooler, with highs about 76°F and lows around 57°F.
- November: Further cooling with highs approximately 68°F and lows near 46°F.
Temperature Range Summary:
| Month | High °F | Low °F |
|---|---|---|
| January | 60 | 38 |
| February | 64 | 43 |
| March | 69 | 48 |
| April | 76 | 55 |
| May | 82 | 63 |
| June | 87 | 72 |
| July | 89 | 75 |
| August | 88 | 75 |
| September | 84 | 69 |
| October | 76 | 57 |
| November | 68 | 46 |
| December | 61 | 40 |
Charleston’s climate is defined by hot, humid summers and mild winters. The variation in temperature makes it a city with diverse seasonal changes.
More details on temperature patterns can be found in various climate articles like those on ChaseDay.com.
Average Precipitation In Charleston, South Carolina
Charleston, South Carolina, experiences a range of precipitation patterns throughout the year. The city sees both rain and occasional snowfall, with the wetter season offering more frequent wet days.
Average Rainfall In Charleston, South Carolina
Charleston has varying rainfall across different months. The wetter season spans from late spring through early fall, specifically from June to September. This period sees a significant amount of rainfall, with June, July, and August being particularly wet.
July is the month with the highest number of wet days, averaging around 14.8 days. On a typical wet day, rainfall measures at least 0.04 inches. August is known for being the wettest month with about 185 mm of precipitation.
In contrast, the drier months like January and February receive much less rain. Rainfall during these months tends to be lower, with fewer wet days.
Average Snow In Charleston, South Carolina
Snowfall in Charleston is quite rare. The city averages only 0.6 days of snow annually, accumulating to a mere 0.16 inches.
When it does snow, it typically occurs in the winter months, especially January and February.
Despite the rare snow, it is significant enough to be noted but not impactful compared to the rain. Snowfall is limited to such brief periods that it is often a novelty rather than a weather concern.
For more information on snow and ice, visit relevant articles about snow and ice.
Average Sun In Charleston, South Carolina
Charleston enjoys a significant amount of sunshine throughout the year, which can impact various activities and daily routines. Understanding how much solar energy one can expect during different times of the year is essential for planning outdoor events and activities.
Average Daily Shortwave Solar Energy In Charleston, South Carolina
In Charleston, the amount of daily shortwave solar energy varies by season.
During the summer months, around June and July, the city often experiences the highest levels, with clear skies and extended daylight hours. The energy peaks at about 6.7 kWh per square meter per day.
In contrast, winter months see shorter days and more frequent overcast conditions. December usually has the lowest solar energy levels, averaging around 3.7 kWh per square meter per day.
Daylight Saving Time, which begins in March and ends in November, extends evening hours, giving residents more time to enjoy the sun.
Sunrise in Charleston typically shifts from around 7:00 AM in winter to as early as 6:00 AM in summer, with sunset occurring later in the evening.
Average Humidity In Charleston, South Carolina
Charleston experiences a humid subtropical climate. This means that the air can often feel muggy and oppressive during the warmer months.
On average, August is the most humid month with humidity reaching 79%. In contrast, February is the least humid, with average humidity at 67%. The annual average humidity in Charleston stands at 73%.
Here’s a quick look at monthly average humidity levels:
| Month | Average Humidity (%) |
|---|---|
| January | 70 |
| February | 67 |
| March | 69 |
| April | 71 |
| May | 74 |
| June | 76 |
| July | 78 |
| August | 79 |
| September | 77 |
| October | 74 |
| November | 72 |
| December | 71 |
Due to this high humidity, the summer months can often feel more oppressive than the actual temperature suggests. This can make activities outside feel more tiring.
Even in winter, the air rarely feels dry. The least humid months still maintain relatively high moisture levels compared to other regions.
Average Wind In Charleston, South Carolina
Charleston experiences varying wind speeds throughout the year. The windiest month is February, with an average hourly wind speed of 10.8 miles per hour.
In contrast, August is the calmest month, having an average hourly wind speed of 8.0 miles per hour. The calmer period extends from May 1 to October 26, offering months of lighter winds.
The table below summarizes the average wind speeds in key months:
| Month | Average Wind Speed (mph) |
|---|---|
| February | 10.8 |
| August | 8.0 |
March also sees significant winds with an average speed of 6.1 miles per hour. Windy conditions are common, providing a dynamic climate for residents and visitors alike.
Average Air Quality In Charleston, South Carolina
Charleston, South Carolina generally experiences good air quality throughout the year. The Air Quality Index (AQI) often remains in the “Good” category.
This means that the air is safe to breathe for the majority of people.
Typical AQI readings in Charleston present average values below 50. These values indicate low levels of air pollutants, including PM2.5 and PM10 particles.
| AQI Value | Air Quality | Health Implications |
|---|---|---|
| 0-50 | Good | Air quality is considered satisfactory. |
| 51-100 | Moderate | Air quality is acceptable; for some pollutants, there may be a moderate health concern for a small number of people. |
| 101-150 | Unhealthy | Health effects can be seen in sensitive groups. Healthy individuals may experience minor effects. |
Particulate Matter (PM2.5) typically measures low in Charleston, making it a healthy place for outdoor activities.
The city’s coastal location helps disperse pollutants, contributing to this favorable air quality.
Real-time air quality conditions can be checked on various platforms like IQAir and AccuWeather.
These sites provide updated AQI readings and forecasts, helping residents plan their activities accordingly.
The clean air in Charleston is aided by its climate, which features frequent breezes and occasional rainfall that help maintain low levels of airborne pollutants.
Topography Of Charleston, South Carolina
Charleston, South Carolina, has a varied landscape influenced by its coastal location along the Atlantic Ocean. The city lies at an average elevation of 13 feet.
However, the elevation can range from -16 feet to 16 feet, depending on the particular area within the city.
Elevation Changes
- Average Elevation: 13 feet
- Minimum Elevation: -16 feet
- Maximum Elevation: 16 feet
The city features a mix of flat areas and small hills, which gently slope towards the coastline.
This diverse terrain is conducive to various outdoor activities and scenic views. The low elevation and proximity to the ocean make the area prone to flooding, especially during heavy rains and storms.
Coastal Influence
Charleston’s topography is heavily shaped by the Atlantic Ocean. The coastal plains extend inland, influencing the soil and vegetation.
The interaction between land and sea creates unique ecosystems, such as marshes and estuaries, which are rich in wildlife.
Growing Season
The topography and climate of Charleston combine to create a long growing season, making it ideal for agriculture.
The fertile coastal plains support a variety of crops and plants, benefiting from the extended periods of warm weather and adequate rainfall.
Charleston’s blend of low-lying areas and proximity to the ocean plays a crucial role in its natural beauty and ecological diversity. The terrain not only influences the city’s weather patterns but also affects the lifestyle and activities available to its residents.
For more detailed information, you can explore the Charleston topographic map, elevation, terrain.
Extreme Weather Events That Occur In Charleston, South Carolina
Charleston, South Carolina experiences various extreme weather events due to its subtropical climate.
Hurricanes and Tropical Storms
Hurricanes are frequent, especially during hurricane season from June to November.
For instance, the State has declared a State of Emergency ahead of Tropical Storm Debby.
Flooding
Charleston is prone to severe flooding. In 2015, record-setting floods caused by heavy rainfall led to significant damage.
The city also deals with frequent tidal flooding due to its sinking land and rising sea levels.
Thunderstorms
Intense thunderstorms are common, bringing heavy rain, strong winds, and hail.
For example, an intense storm in June 2024 toppled trees and battered homes with golf ball-sized hail.
Heat Waves
During summer, temperatures often soar above 90°F, causing heat waves that can last for several days.
This extreme heat stresses both residents and the environment.
Severe Winds
Charleston also experiences severe winds, particularly during hurricanes and thunderstorms.
These winds can cause extensive damage to property and infrastructure.
Metrics Table
| Event | Description |
|---|---|
| Hurricanes | Frequent during June-November |
| Flooding | Caused by rainfall and tidal changes |
| Thunderstorms | Heavy rain, strong winds, and hail |
| Heat Waves | Temperatures above 90°F |
| Severe Winds | High-speed winds causing damage |
Best Time Of The Year To Visit Charleston, South Carolina
The best time to visit Charleston is during the shoulder seasons of spring and fall, when the climate is mild and there are many events and festivals.
Summer can be hot and humid, while winter offers a cooler and quieter experience.
What Is Charleston, South Carolina Like In Spring
Spring in Charleston is from March to May. During this time, temperatures range from the low 60s to the mid-70s (°F).
The pleasant weather makes it a perfect time for walking tours, exploring historic sites, and enjoying outdoor activities.
The city comes alive with blooming flowers and hosts popular events like the Spoleto Festival USA and the Charleston Food and Wine Festival.
Rainfall is moderate, but it’s wise to carry an umbrella.
What Is Charleston, South Carolina Like In Summer
Summer in Charleston, from June to August, brings hot and humid weather.
Temperatures often exceed 85°F, and humidity levels can be high.
This season is perfect for beach lovers and those keen on water sports.
The city’s famous beaches like Folly Beach and Isle of Palms provide great spots for sunbathing and swimming.
Thunderstorms are common, so checking the weather forecast before planning outdoor activities is essential.
Hotel prices tend to be lower compared to spring and fall.
What Is Charleston, South Carolina Like In Fall
Fall spans from September to November and is considered one of the best times to visit.
The temperatures are similar to spring, ranging from the mid-60s to the mid-70s (°F).
The weather is ideal for exploring the city’s historic districts, taking ghost tours, and attending harvest festivals.
Events like the MOJA Arts Festival and the Charleston Restaurant Week draw many visitors. Fall foliage adds charm to the city’s streets and parks.
What Is Charleston, South Carolina Like In Winter
Winter in Charleston is mild compared to other regions.
From December to February, temperatures typically hover between the mid-40s and mid-50s (°F).
Snow is rare, and the atmosphere is calm, making it a peaceful time to visit.
Winter festivals, holiday markets, and less crowded tourist spots offer a unique experience.
Hotel rates are generally more affordable, and the lack of large crowds makes for an intimate visit.
This climate makes Charleston a year-round destination, with something to offer every season.