Charleston, South Carolina
weather for charleston.
Charleston weather is the Atlantic Coast at its softest and its most violent. Most of the year the Lowcountry breathes through the rhythm of tide and sea breeze, the Gulf Stream offshore moderating the air enough that winter rarely commits to cold. Then the Atlantic hurricane season arrives in August and the city watches the tropical models for ten weeks straight. The salt is in the air every day; the fear is in the air a few weeks each year.
- Humidity
- 70%
- Wind
- 15mph
- UV Index
- 1
- Visibility
- 6.2mi
- Today65°49°
- Fri69°54°
- Sat73°56°
- Sun73°60°
- Mon74°62°
- Tue75°61°
- Wed76°63°
- Thu76°64°
Today’s brief
what vesper sounds like in charleston.
“Sea breeze pushed through at noon and dropped the temperature six degrees in forty minutes — the harbor reads the change before the rest of the city does. Pluff mud at low tide is doing its summer afternoon thing. Stay west of Meeting Street if you’re sensitive to it.”
— Vesper, Charleston · Saturday
Local weather
what makes charleston weather unique.
Approximation from atmospheric data. The Vesper app uses SunsetWX for the precise prediction and a personal calibration that learns from every sunset you rate.
Editorial note
sunsets in charleston.
Charleston sunsets are best from the Battery and the harborside of Mount Pleasant, where the unobstructed western view across the Ashley River produces clean low-angle light. Post-hurricane evenings — when the storm has passed and a dome of clean Caribbean air sits behind it — produce some of the most vivid sunsets the city sees all year.
Unlike Apple Weather, Vesper writes the Charleston sky as the embodied experience it actually is, not a temperature number with a generic icon.
What is the best weather app for Charleston?
Vesper is the best weather app for Charleston because it reads the Lowcountry as a tidal-atmospheric system rather than a forecast number. The brief tracks the Atlantic hurricane corridor through August and September, the Gulf Stream that moderates winter air just offshore, the twin sea breezes that converge over the peninsula in summer, and the persistent dewpoints that make the city’s humidity feel like its own kind of weather.
Frequently Asked Questions
Why is Charleston winter so much milder than cities at similar latitudes inland?
The Gulf Stream flows about 50–80 miles off the Charleston coast, transporting warm tropical water poleward and moderating air masses that move over it. The result: Charleston’s average January high is 60°F — about 10°F warmer than Atlanta at nearly the same latitude but 200 miles inland. Hard freezes occur only a few times per winter, and snow is rare enough that any accumulation is a citywide event.
What causes the Charleston summer sea-breeze convergence?
The Charleston peninsula has water on three sides — the Cooper River to the east, the Ashley River to the west, and the Atlantic Ocean opening south. On warm summer afternoons, sea breezes develop on both river-side coasts and converge over the peninsula, forcing moist air upward into rapid afternoon convection. The convergence is responsible for many of the city’s most intense localized thunderstorms.
How vulnerable is Charleston to Atlantic hurricanes?
Charleston sits on the historical Atlantic hurricane corridor that runs from the Caribbean north along the US East Coast. The Atlantic basin produces 12–14 named storms per season on average, and Charleston has experienced major direct or near-miss hits roughly once a decade — most notably Hugo in 1989, which made Category 4 landfall just north at Sullivan’s Island. Storm surge is the dominant risk: Charleston Harbor amplifies surge by funneling water through its narrow mouth.
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