National Weather Service United States Department of Commerce

NWS Charleston, SC is responsible for producing forecasts of winds, seas, and weather for the nearshore waters of southeast South Carolina out through 20 nautical miles as well as north coastal Georgia out 60 nautical miles. Warnings and statements for hazardous weather such as strong thunderstorms and dense fog are also issued. In addition, forecasts are issued for the beaches from spring through fall along with watches/warnings/advisories when tide levels are high enough to cause saltwater flooding near the coast.


Marine Portal

Marine Portal

Marine weather observations, hazards, radar, satellite, forecasts, models, sea surface temperatures, tide and current information.


Charleston Harbor tide observation

Tide Information

Observed: Charleston | Savannah
Forecast: Charleston | Savannah
Tide Tables: Charleston | Savannah
Next Four Tides

National Data Buoy Center

Marine Observations

Various marine observations across the region

Text Observation Listing
Local Water Temps

Text Forecasts

Charleston Harbor
S Santee to Edisto Beach out 20nm
Edisto Beach to Savannah out 20nm
Savannah to Altamaha out 20nm
Savannah to Altamaha 20-60nm
Cape Fear to 31N to 1000 fm
NOAA WaveWatch Model

Wave Forecast Model

NOAA WaveWatch model forecasts of wave heights and periods

Local Graphical Marine Weather Forecasts

Graphical Forecasts

Graphical forecasts depicting various marine weather elements

Enhanced Local Graphics:
Max Wind Speed
Max Wind Gust


NWS Charleston Products

Additional Information