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 tidal heights:
Charleston | Savannah
Forecast tide levels:
Charleston | Savannah
Tide Tables:
Charleston | Savannah

National Data Buoy Center

Marine Observations

Various marine observations across the region
Local Graphical Marine Weather Forecasts

Graphical Forecasts

Graphical forecasts depicting various marine weather elements
NOAA WaveWatch Model

Wave Forecast Model

NOAA WaveWatch model forecasts of wave heights and periods


NWS Charleston Products

Additional Information