Should you sail in Charleston Harbor?
GO — Yes — go sailing. Sailing score 79/100 · United States. Marine data unavailable. Best window starts around Today 7:00 AM.
About sailing in Charleston Harbor
Charleston Harbor opens to the Atlantic past Fort Sumter, with historic waterfront, marsh creeks, and warm Lowcountry sailing.
Best time to sail
March through November; spring and fall bring pleasant temperatures and steady breezes.
Sailing notes
Shifting sandbars near harbor mouth; summer thunderstorms build quickly — plan afternoon returns.
Wind and local conditions
Sea breezes from the south and southeast in summer; frontal passages bring gusty westerlies and northerlies.
What SailCall covers
Wind, seas, rain, visibility, and pressure for today's coastal day sail, using WeatherAPI.com forecast and marine data. Wave outlook is included; tide times are not yet — check a local tide table before harbor entry. Not a chart plotter or passage planner.
Should I go sailing today?
Charleston Harbor
GO
Yes — go sailing
79
Sailing score
Next 24 hours
Hourly sailing comfort at the harbor — today and tomorrow are local to the marina.
Best intervals: Today 7:00 AM – 5:00 PM · Today 6:00 PM – 10:00 PM
Boat type
Showing Keelboat wind thresholds
Hover or tap an hour for details · Next 24 hours
At harbor: Sat, Jul 4, 7:00 AM (Eastern Daylight Time)
The call
Conditions near Charleston Harbor look favorable for a day sail today.
Location
Charleston Harbor, United States
Today's seas
No marine wave data for this point. Try searching closer to open water or a coastal waypoint. Offshore forecasts need a sea position, not an inland pin.
Conditions at a glance
What stood out in the forecast
Wind
Good11 kt · BF 4
Sustained to 11 kt · gusts to 17 kt · BF 5
Beaufort 5 — a workable breeze for most day sails. Watch for funneling between headlands and tall buildings near harbors; local gusts can exceed the open-water forecast.
Rain
Good1%
0.0 mm total · 1% peak chance · 0 wet hour(s)
Little rain expected — one less factor stealing visibility and grip on deck. Still pack a light jacket; conditions change faster on the water than ashore.
Air temperature
Poor33°C
Air 23–33°C · feels like 23–39°C
Feels-like 23–39°C with spray — dress for immersion, not the marina thermometer. Cold shock and hypothermia are real risks if someone goes overboard; carry spare layers in a dry bag.
Visibility
Good7.1 nm
Lowest 7.1 nm · best 14 nm today
Generally clear sightlines (about 13.1–14 nm). Good for spotting traffic and shoreline references — still verify charted marks; glare and spray can fool you even on “clear” days.
Barometric pressure
Good1015 hPa
1015 hPa → steady (2 hPa change)
Pressure is steady — no strong synoptic system pushing through on this snapshot. Local wind, sea breeze, and geography still dominate near shore.
UV / sun
PoorUV 8.5
Very high index — limit bare-skin time on deck. · peak near 14:00
UV 8.5 is very high — water reflection adds exposure you do not feel on land. Broad-spectrum SPF, hat, lip protection, and hydration reduce fatigue; consider shade breaks if you are out all day.
Why we said GO
What pushed the score — how we score
Marine data unavailable
HighWave forecast could not be loaded for this point. Try a location closer to open water.
How we decided
We score sailing conditions with fixed thresholds, so you can see why we picked go, caution, or no-go. Official charts, tide books, and your own judgment still run the show.
- GO — sailing score ≥70 with no critical blockers
- CAUTION — score 45–69, or manageable risks
- NO-GO — score <45 or dangerous wind/seas/storms
Engine v1.1.19 · open_meteo marine + forecast · Evaluated Sat, Jul 4, 7:59 AM (Eastern Daylight Time) · limited marine data
What should I do?
What to do next
Check local tide tables
SailCall does not include tide data yet — verify harbor depth before you go.
At harbor: Sat, Jul 4, 7:00 AM (Eastern Daylight Time)
Day outlook
2-day · °C, kt, m, nm, mm
Today
Fair
33°C / 23°C
No rain · 11 kt · BF 4
Sail with preparation: breezy conditions (remaining hours).
Tomorrow
Fair
33°C / 25°C
No rain · 14 kt · BF 4
Sail with preparation: breezy conditions.
Forecast data from third-party providers.