Charleston SC Monthly Weather Guide

Planning a trip to Charleston, South Carolina, or just curious about its climate throughout the year? Understanding the Charleston SC monthly weather is key to making the most of your visit, whether you're aiming for sunny beach days or cozy evenings exploring historic streets. Charleston boasts a humid subtropical climate, characterized by hot, humid summers and mild winters. The city experiences significant rainfall year-round, often in the form of afternoon thunderstorms during the warmer months. In our analysis of Charleston's climate patterns, we've found that each month offers a unique experience, influenced by coastal breezes and seasonal shifts.

This guide will break down the expected weather for each month, providing you with actionable insights to pack appropriately and plan your Charleston adventures. We’ll cover temperature ranges, precipitation, humidity levels, and what to expect in terms of seasonal activities, helping you navigate the nuances of Charleston SC weather by month.

Understanding Charleston's Climate Patterns

Charleston, SC, sits on the Atlantic coast, and its weather is heavily influenced by this proximity. The Gulf Stream current offshore plays a significant role in moderating temperatures, keeping winters milder than inland areas and contributing to the humidity during the summer.

Seasonal Temperature Trends

Charleston experiences distinct seasons, though the transition between them can be gradual. Summers are long and hot, while winters are short and mild. Spring and fall offer the most pleasant temperatures for outdoor activities.

Summer (June-August)

Summers in Charleston are typically hot and humid, with average high temperatures often in the upper 80s and low 90s Fahrenheit. Overnight lows usually remain in the mid-70s, offering little relief from the heat.

Fall (September-November)

As summer wanes, fall brings a welcome respite. September can still feel quite warm, but by October and November, temperatures become much more comfortable, with highs in the 60s and 70s and cooler evenings.

Winter (December-February)

Winters are generally mild, with average high temperatures in the 50s and 60s. Freezing temperatures are uncommon, but occasional cold snaps can occur. Snowfall is extremely rare.

Spring (March-May)

Spring is a beautiful time in Charleston, with temperatures gradually warming from the 60s in March to the 70s and 80s by May. This season is ideal for exploring the city's gardens and historic sites.

Precipitation and Humidity

Charleston receives a good amount of rainfall throughout the year. The summer months often see brief, intense thunderstorms, typically occurring in the afternoon. While these can be dramatic, they often clear quickly, leaving behind humid conditions.

Humidity Levels

High humidity is a hallmark of Charleston's climate, particularly during the summer months. This can make the perceived temperature feel even hotter than the actual thermometer reading. Even in cooler months, humidity can persist.

Rainfall Patterns

Average annual rainfall in Charleston is around 50 inches. The distribution is relatively even, though summer thunderstorms can lead to higher monthly totals during that period. Fall and winter tend to be slightly drier.

Charleston SC Weather by Month: A Detailed Look

Now, let's dive into the specifics of Charleston SC monthly weather, providing you with a month-by-month breakdown to aid your planning.

January Weather in Charleston SC

January is typically the coolest month in Charleston. Average high temperatures hover around 59°F (15°C), with average lows dipping to about 39°F (4°C). While chilly, it's rarely freezing. Rainfall averages around 3.7 inches, often as light rain or drizzle. This is a great time for indoor attractions like museums and historical tours, with fewer crowds.

February Weather in Charleston SC

February sees a slight warming trend. Average highs climb to about 62°F (17°C), and average lows are around 41°F (5°C). Rainfall remains similar to January, approximately 3.7 inches. The city starts to bloom, making early walks pleasant, though a light jacket is still recommended.

March Weather in Charleston SC

March marks the beginning of spring's gentle arrival. Average high temperatures rise to the mid-60s (around 67°F or 19°C), with lows in the low 50s (around 50°F or 10°C). Rainfall averages about 4.2 inches. The azaleas and other flowers begin to show their colors, making it an excellent month for exploring outdoor gardens and the historic district.

April Weather in Charleston SC

April is a prime month for visiting Charleston. The weather is pleasantly mild, with average highs in the low 70s (around 73°F or 23°C) and lows in the low 50s (around 53°F or 12°C). Rainfall typically decreases slightly to about 3.3 inches. This is ideal weather for walking tours, harbor cruises, and enjoying outdoor dining.

May Weather in Charleston SC

May brings warmer temperatures and increased humidity. Average highs reach the upper 70s (around 79°F or 26°C), with lows in the low 60s (around 62°F or 17°C). Rainfall averages around 3.5 inches, and thunderstorms can start to become more frequent in the afternoons. It's perfect beach weather, but pack light, breathable clothing.

June Weather in Charleston SC

June marks the official start of summer. Expect hot and humid conditions. Average high temperatures are in the low 80s (around 84°F or 29°C), but the humidity can make it feel hotter. Lows are typically in the mid-70s (around 73°F or 23°C). Rainfall increases to about 4.8 inches, often coming in the form of afternoon thunderstorms. Stay hydrated and plan indoor activities for the hottest part of the day.

July Weather in Charleston SC

July is usually the hottest and most humid month. Average highs are consistently in the mid-80s (around 86°F or 30°C), with lows rarely dropping below the mid-70s (around 75°F or 24°C). Rainfall averages around 4.8 inches, with frequent afternoon thunderstorms being common. Sunscreen, hats, and light clothing are essential.

August Weather in Charleston SC

August continues the summer heat and humidity. Highs are similar to July, hovering in the mid-80s (around 85°F or 29°C), with lows in the mid-70s (around 74°F or 23°C). Rainfall averages about 4.7 inches, and thunderstorms remain a daily possibility. Hurricane season is also active, though direct hits are infrequent.

September Weather in Charleston SC

As summer begins to recede, September still offers warm weather, though with slightly less oppressive humidity. Average highs are in the upper 70s (around 79°F or 26°C), and lows are in the low 70s (around 71°F or 22°C). Rainfall averages around 4.1 inches, with lingering thunderstorm potential. It’s a great month for outdoor activities before the autumn chill. — Charlie Kirk Death: Debunking Rumors And Setting The Record Straight

October Weather in Charleston SC

October is often considered one of the best months in Charleston. The heat and humidity break significantly. Average high temperatures are in the mid-70s (around 73°F or 23°C), with lows in the low 50s (around 52°F or 11°C). Rainfall averages about 3.1 inches, making it one of the drier months. Perfect weather for exploring the historic streets and enjoying the fall foliage. — Los Angeles Angels: Your Ultimate Guide To The Halos

November Weather in Charleston SC

November brings cooler, crisp air. Average highs drop into the low 60s (around 64°F or 18°C), and average lows are in the upper 40s (around 47°F or 8°C). Rainfall averages around 3.2 inches. The city is beautifully adorned for the holidays, and light jackets are usually sufficient for comfort.

December Weather in Charleston SC

December offers mild winter weather. Average high temperatures are around 60°F (16°C), with lows in the mid-40s (around 43°F or 6°C). Rainfall averages about 3.2 inches. While sunny days are common, cooler temperatures mean packing layers is advisable. It’s a festive time with charming holiday decorations.

Preparing for Charleston's Weather

Regardless of the month you visit, preparing for Charleston's climate is essential. Here are some general tips based on our experience:

What to Pack

• Summer (June-August): Lightweight, breathable clothing (cotton, linen). Swimsuit, sun hat, sunglasses, sandals, and waterproof sandals for potentially rainy days. A light rain jacket is advisable.
• Spring (March-May) & Fall (September-October): Layers are key. Pack T-shirts, long-sleeved shirts, light sweaters or jackets, and comfortable walking shoes. A light rain jacket is still a good idea.
• Winter (November-February): Warmer layers. Sweaters, a medium-weight jacket, closed-toe shoes. Scarves and gloves might be useful for cooler evenings, though heavy winter gear is rarely needed.

Hydration and Sun Protection

Given the humidity and summer heat, staying hydrated is crucial. Always carry water, especially when exploring outdoors. Ample sun protection, including high SPF sunscreen, hats, and sunglasses, is non-negotiable year-round, but especially from May through September.

Hurricane Season Preparedness

Charleston is located in a hurricane-prone region. Hurricane season officially runs from June 1st to November 30th, with the peak typically occurring from August through October. While the chances of a direct hit are low in any given year, it's wise to stay informed about weather forecasts if traveling during this period. Check the National Hurricane Center (NHC) for official advisories.

Frequently Asked Questions (FAQ)

What is the best month to visit Charleston SC for weather?

The best months for weather in Charleston are typically April, May, October, and November. During these periods, you'll experience milder temperatures, lower humidity, and less frequent rainfall compared to the summer months.

Is Charleston SC very humid?

Yes, Charleston is known for its high humidity, especially from late spring through early fall (May to September). This humidity can make the already warm temperatures feel significantly hotter. — Taylor Swift At Chiefs Game Today? Latest Updates

Does it rain a lot in Charleston SC?

Charleston receives a substantial amount of rainfall throughout the year, averaging around 50 inches annually. While rain can occur anytime, the summer months often feature brief but intense afternoon thunderstorms.

What should I wear in Charleston in the summer?

In the summer, pack light, breathable clothing like cotton or linen shorts, t-shirts, and sundresses. Light rain gear and a hat are also recommended for protection against sun and sudden showers.

Can you swim in Charleston in the winter?

While the ocean temperature in winter is quite cold (typically in the 50s and 60s Fahrenheit), some very hardy individuals might brave a quick dip. However, for most, swimming is not comfortable during the winter months. Beach activities like walking are still enjoyable.

How hot does it get in Charleston in July?

July is typically the hottest month, with average high temperatures in the mid-80s Fahrenheit (around 30°C). However, due to high humidity, the 'feels like' temperature can often exceed 90-95°F.

Is Charleston safe from hurricanes?

Charleston is susceptible to hurricanes due to its coastal location. While direct hits are not an annual occurrence, the city is prepared for tropical storm activity. Visitors during hurricane season should monitor weather advisories from sources like the National Hurricane Center (nhc.noaa.gov).

Conclusion

Understanding the Charleston SC monthly weather is your first step toward an unforgettable experience in this charming Southern city. From the blooming springs and balmy autumns to the hot, humid summers and mild winters, each month offers its own unique appeal. By packing appropriately, staying hydrated, and being mindful of seasonal patterns, you can fully immerse yourself in the beauty and history of Charleston, SC, no matter when you visit. For more detailed climate information and travel advisories, consult resources like the National Weather Service or the National Oceanic and Atmospheric Administration (NOAA).