Charleston Climate & Monthly Temperature Overview – United States
Climate
Charleston has a humid subtropical climate characterized by mild winters and hot, humid summers. The average annual temperature is 64.5 °F (17.6°C). The warmest months are July and August, with average temperatures reaching 86 °F (30°C) and 85 °F (29°C), respectively. The coldest months are January and February, with average temperatures around 45 °F (7.2°C). Charleston experiences an average of 50 inches (127 cm) of rainfall annually, with the wettest months being July and August.
Average Weather Year Round
January: Temperatures range from 37 °F (2.8 °C) to 57 °F (13.9 °C), with an average temperature of 46 °F (7.8 °C). Average rainfall is 2.7 inches (6.9 cm).
February: Temperatures range from 41 °F (5 °C) to 61 °F (16.1 °C), with an average temperature of 51 °F (10.6 °C). Average rainfall is 2.5 inches (6.4 cm).
March: Temperatures range from 47 °F (8.3 °C) to 68 °F (20 °C), with an average temperature of 58 °F (14.4 °C). Average rainfall is 3.4 inches (8.6 cm).
April: Temperatures range from 55 °F (12.8 °C) to 76 °F (24.4 °C), with an average temperature of 66 °F (18.9 °C). Average rainfall is 3.5 inches (8.9 cm).
May: Temperatures range from 65 °F (18.3 °C) to 85 °F (29.4 °C), with an average temperature of 75 °F (23.9 °C). Average rainfall is 2.9 inches (7.4 cm).
June: Temperatures range from 74 °F (23.3 °C) to 91 °F (32.8 °C), with an average temperature of 83 °F (28.3 °C). Average rainfall is 6.5 inches (16.5 cm).
July: Temperatures range from 78 °F (25.6 °C) to 93 °F (33.9 °C), with an average temperature of 86 °F (30 °C). Average rainfall is 5.4 inches (13.7 cm).
August: Temperatures range from 78 °F (25.6 °C) to 92 °F (33.3 °C), with an average temperature of 85 °F (29.4 °C). Average rainfall is 5.8 inches (14.7 cm).
September: Temperatures range from 73 °F (22.8 °C) to 88 °F (31.1 °C), with an average temperature of 81 °F (27.2 °C). Average rainfall is 4.4 inches (11.2 cm).
October: Temperatures range from 63 °F (17.2 °C) to 80 °F (26.7 °C), with an average temperature of 72 °F (22.2 °C). Average rainfall is 3.9 inches (9.9 cm).
November: Temperatures range from 52 °F (11.1 °C) to 71 °F (21.7 °C), with an average temperature of 62 °F (16.7 °C). Average rainfall is 3.1 inches (7.9 cm).
December: Temperatures range from 43 °F (6.1 °C) to 61 °F (16.1 °C), with an average temperature of 52 °F (11.1 °C). Average rainfall is 2.6 inches (6.6 cm).
Average Temperature in Charleston, United States
Charleston, located on the southeastern coast of South Carolina, United States, experiences a humid subtropical climate characterized by mild winters and hot, humid summers. The city’s average temperature throughout the year is 64.6°F (18.1°C), with significant variations between seasons.
During the summer months, from June to August, Charleston experiences its warmest weather. The average temperature during this period ranges from 82.2°F (27.9°C) in June to 87.7°F (30.9°C) in July. High humidity levels often accompany the summer heat, making it feel even warmer. The hottest month on record in Charleston is July, with an average high temperature of 93.8°F (34.3°C).
In contrast, the winter months in Charleston are relatively mild. The average temperature from December to February ranges from 49.5°F (9.7°C) in December to 53.2°F (11.8°C) in January. Although temperatures rarely dip below freezing, occasional cold fronts can bring brief periods of colder weather. The coldest month on record in Charleston is January, with an average low temperature of 31.9°F (-0.6°C).
Cloud Cover
Charleston, South Carolina, experiences a wide variety of cloud cover throughout the year. During the summer months, high humidity levels often result in cumulus clouds and frequent afternoon thunderstorms. These clouds can provide temporary relief from the heat and humidity. In the winter, stratus and altostratus clouds are more common, bringing overcast skies and occasional drizzle.
Cloud Types
The most common cloud types observed in Charleston are:
- Cumulus: White, puffy clouds that often appear in fair weather.
- Stratus: Flat, gray clouds that cover the entire sky and often produce drizzle or light rain.
- Altostratus: Similar to stratus clouds, but higher in the sky and producing lighter precipitation.
- Cirrus: Thin, wispy clouds that are composed of ice crystals and appear as white streaks in the sky.
- Cumulonimbus: Towering clouds with a flat anvil-shaped top that produce heavy rain, thunderstorms, and occasional hail.
Monthly Precipitation Patterns
Charleston experiences significant variation in monthly precipitation throughout the year. The wettest months are July and August, with an average rainfall of over 8 inches each. Precipitation levels decrease noticeably during the fall and winter months, with October to March receiving an average of 3-4 inches of rainfall per month. The driest months are February and March.
Annual Precipitation Variability
The average annual precipitation in Charleston is approximately 50 inches. However, yearly precipitation totals can vary significantly. In years with frequent tropical storms or hurricanes, the city can receive up to 70 inches of rainfall. Conversely, during drier years, precipitation levels may fall below 40 inches. This variability is largely influenced by weather patterns across the Atlantic Ocean and the Gulf of Mexico, which drive the frequency and intensity of storms that affect the region.
Rainfall Patterns and Variability
Charleston experiences a humid subtropical climate characterized by abundant rainfall throughout the year. On average, the city receives around 45 inches of precipitation annually, with a slight increase during the summer months. Rainfall patterns are influenced by the proximity to the Atlantic Ocean, which contributes to significant frontal activity and the occasional tropical storm or hurricane. Precipitation is relatively evenly distributed throughout the year, although the wettest months tend to be May, June, and September.
Seasonal Variations and Extreme Weather Events
Summer months in Charleston are typically the wettest, with frequent thunderstorms and heavy downpours. The city also experiences occasional droughts during the summer, which can lead to water restrictions and impact water availability. Winter months tend to be drier, but the city is still prone to variability in precipitation. Extreme weather events, such as hurricanes and tropical storms, can bring torrential rainfall and flooding to the region. In recent years, Charleston has faced significant flooding events due to heavy rainfall, underscoring the importance of flood preparedness and mitigation efforts.
Snowfall Characteristics
Snowfall in Charleston, located in the southeastern United States, is a rare occurrence. The city lies within a subtropical climate zone, typically characterized by warm, humid summers and mild, dry winters. Snowfall can occur occasionally during the winter months, but accumulations are usually minimal and short-lived. The average annual snowfall in Charleston is approximately 2 inches, significantly lower than northern regions of the country. Due to its rarity, snowfall in Charleston often garners significant attention and excitement from locals.
Impacts on Infrastructure and Daily Life
When snowfall does occur in Charleston, it can have a temporary impact on infrastructure and daily life. Roads may become slick and hazardous, causing traffic disruptions and closures. Schools and businesses may also close or delay operations due to the weather conditions. Public transportation services may experience delays or cancellations. Residents are advised to exercise caution when venturing outdoors and to prepare for potential weather-related disruptions. However, since snowfall is infrequent and generally light, major disruptions to infrastructure and daily life are uncommon in Charleston.
Sunrise and Sunset:
In Charleston, the sun’s daily trajectory is a captivating sight. Sunrise typically occurs between 7:00 and 8:00 AM throughout the year, painting the sky with hues of pink, orange, and gold. The sun ascends quickly, illuminating the city’s historic streets and stunning waterfront. Sunset, on the other hand, offers a breathtaking spectacle between 5:00 and 6:30 PM. As the sun dips below the horizon, it casts a warm glow over the city, creating a serene and romantic atmosphere. The sky transforms into a vibrant canvas, showcasing vibrant reds, oranges, and purples before gradually fading into darkness.
Daylight Hours:
Charleston experiences significant variation in daylight hours throughout the year. During the winter months, from December to February, daylight is at its shortest, with an average of 9-10 hours of sunlight per day. However, as the seasons change, daylight hours gradually increase. From March to May, the city enjoys longer days, averaging 12-13 hours of sunlight. The peak of daylight hours occurs in June, July, and August, when Charleston experiences over 14 hours of daylight, providing ample time for outdoor activities and exploration. As summer transitions to fall, daylight hours gradually decrease, returning to their winter averages by November.
Moonrise and Moonset Times in Charleston
In Charleston, South Carolina, the time of moonrise and moonset depends on the date and season. During the summer months, the moon rises later and sets later than it does during the winter months. The earliest moonrise in Charleston occurs on June 21, when the moon rises at 6:39 AM. The latest moonrise occurs on December 21, when the moon rises at 7:43 AM. The earliest moonset in Charleston occurs on June 21, when the moon sets at 7:45 PM. The latest moonset occurs on December 21, when the moon sets at 8:58 PM.
Full Moon and New Moon Dates in Charleston
The full moon is the phase of the moon when the entire face of the moon is illuminated by the sun. The new moon is the phase of the moon when the moon is not visible from Earth because it is between the Earth and the sun. In Charleston, the full moon occurs on average every 29.5 days. The new moon occurs on average every 29.5 days. The full moon and new moon dates in Charleston vary from year to year. To find the exact dates of the full moon and new moon in Charleston, you can use an online moon calendar.
Seasonal Humidity Variations
Charleston’s humidity levels fluctuate significantly throughout the year. During the summer months (June to September), the city experiences high humidity due to warm temperatures and frequent rainfall. The average relative humidity during this period ranges from 75% to 90%, creating a muggy and uncomfortable environment. In contrast, the winter months (December to February) are characterized by lower humidity levels. The average relative humidity during this season hovers around 60%, making the air feel drier and less humid.
Impact on Comfort and Health
High humidity levels can have a significant impact on human comfort and health. Excessive humidity can make it difficult to regulate body temperature, leading to feelings of discomfort, fatigue, and heat-related illnesses. Additionally, high humidity can contribute to the growth and proliferation of mold and bacteria, which can trigger respiratory problems and allergies. On the other hand, low humidity levels can cause dry skin and mucous membranes, leading to irritation and discomfort. Maintaining an optimal humidity level in indoor environments is crucial for overall health and well-being.
Historical Wind Patterns
Charleston, located on the coast of South Carolina, has a long and complex history of wind patterns. The city is situated in the path of the Gulf Stream, which brings warm, moist air from the Caribbean Sea. This air mass often collides with cooler, drier air from the Atlantic Ocean, creating a weather system known as the “Charleston Low.” This low-pressure system typically brings strong winds and heavy rainfall.
In addition to the Charleston Low, the city is also affected by tropical cyclones. These storms, which form over the warm waters of the Atlantic Ocean, can bring high winds, heavy rain, and even storm surge to the city. Tropical cyclones are most common during the summer and fall months.
Current Wind Conditions
The current wind conditions in Charleston can be found on a variety of websites and apps. The National Weather Service (NWS) provides a detailed forecast for the city, including the expected wind speed and direction. The NWS also issues wind advisories and warnings when necessary.
In addition to the NWS, there are a number of private companies that provide wind data. These companies use a variety of sensors to measure wind speed and direction. This data can be used to create real-time wind maps and forecasts.
Spring (March-May):
Spring in Charleston is a delightful season, offering a vibrant blend of blooming flowers and pleasant temperatures. The average high in March is around 62°F, rising to 75°F in May. With the arrival of spring, the city transforms into a kaleidoscope of colors as azaleas, camellias, and magnolias burst into bloom. This is an ideal time for outdoor activities such as strolling through the charming historic district, visiting gardens, and kayaking through the scenic marshes.
Fall (September-November):
Fall in Charleston is a warm and welcoming time, with average high temperatures ranging from 78°F in September to 65°F in November. The humidity levels drop, making it more comfortable to explore the city on foot or by bike. The vibrant foliage of the surrounding Lowcountry forests creates a picturesque backdrop for enjoying the area’s many outdoor attractions. Festivals abound during this season, including the Charleston Wine + Food Festival and the Spoleto Festival USA, which showcase the city’s culinary and cultural offerings.
Benefits and Challenges of Solar Energy in Charleston, United States
Charleston, South Carolina benefits from ample sunshine, making it an ideal location for solar energy utilization. Solar panels convert sunlight into electricity, offering significant cost savings on energy bills. Additionally, solar energy reduces reliance on fossil fuels, contributing to environmental sustainability and mitigating climate change. However, the initial installation costs of solar panels can be substantial, and intermittent sunlight availability during certain times of the year may require supplemental energy sources.
Adoption and Incentives
The adoption of solar energy in Charleston is steadily increasing, driven by incentives and government policies that promote renewable energy. The state of South Carolina offers rebates and tax credits to encourage solar installations, making it more affordable for homeowners and businesses. Local utility companies also provide net metering programs, allowing solar system owners to sell excess electricity back to the grid, offsetting their energy usage charges. As demand for solar energy grows, Charleston is well-positioned to become a hub for renewable energy development and innovation.
Geography and Climate
Charleston, located in South Carolina, is situated on a peninsula between the Atlantic Ocean and the Ashley and Cooper Rivers. The city’s topography is characterized by its low-lying elevation, with most areas being less than 15 feet above sea level. This terrain makes Charleston susceptible to flooding during storms and high tides. The city’s coastal location also influences its climate, with warm, humid summers and mild winters. Hurricanes and tropical storms pose a significant threat, particularly during the summer and fall months.
Landforms and Natural Features
Charleston is known for its distinctive landforms and natural features. The Battery, a seawall promenade along the waterfront, offers stunning views of the harbor and islands. The city is home to numerous parks and green spaces, including the expansive Middleton Place Gardens, which boasts lush gardens, rice plantations, and historic structures. The Ashley and Cooper Rivers provide opportunities for boating, fishing, and kayaking, while the beaches on nearby islands offer swimming, sunbathing, and water sports. The surrounding area features marshlands, wetlands, and barrier islands, creating a diverse and ecologically important ecosystem.
Charleston International Airport
Charleston International Airport (CHS) is the primary airport serving the city of Charleston, South Carolina, United States. It is located approximately 10 miles (16 kilometers) northwest of downtown Charleston and is the busiest airport in the state. CHS is a hub for Silver Airways and offers a wide range of domestic and international flights. The airport has three terminals, with a total of 41 gates, and handles over 4.5 million passengers annually.
CHS is conveniently located near major highways and public transportation options, making it easily accessible from all parts of the Charleston area. The airport also offers a variety of amenities and services for travelers, including restaurants, shops, lounges, and ground transportation options such as taxis, ride-sharing services, and rental cars.
History and Architecture
Charleston’s rich history is evident in its stunning architecture. Founded in 1670, the city boasts a kaleidoscope of architectural styles, from Colonial Georgian mansions to ornate Victorian townhouses. Rainbow Row, a series of vibrant pastel-hued homes, is a beloved icon of the city. Preserved plantations like Middleton Place and Drayton Hall offer glimpses into the opulent lifestyle of the antebellum South. Battery Park provides panoramic waterfront views, lined with historic mansions that once played host to prominent figures.
Culture and Arts
Charleston is renowned for its vibrant arts and culture scene. The Charleston Symphony Orchestra and Spoleto Festival USA showcase world-class musical and performing arts performances. The city is also known for its thriving culinary landscape, offering a delectable fusion of Southern charm and coastal flavors. King Street, the city’s main shopping artery, is lined with boutiques, art galleries, and charming restaurants. For a unique cultural experience, explore the Charleston City Market, a bustling hub of local crafts, food vendors, and live entertainment. The Gibbes Museum of Art houses a renowned collection of American art, while the Charleston Museum offers insights into the city’s fascinating past.