32.7533’ N, 79.8767’ W

Fort Sumter, SC

79°
H -°
L 70°
ENE
10mph
High tide
11:51 pm

Fort Sumter, SC Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Sep 15
Partly Cloudy
Close Hourly
-º / 70º 4% NE 11 mph 78%
8pm Clear 79º 1% ENE 10 mph 75%
9pm Mostly Clear 79º 1% ENE 9 mph 76%
10pm Partly Cloudy 78º 1% ENE 8 mph 77%
11pm Partly Cloudy 78º 1% ENE 8 mph 76%
Wed
Sep 16
Partly Cloudy
View Hourly
86º / 70º 8% NE 14 mph 67%
12am Partly Cloudy 77º 1% ENE 7 mph 76%
1am Partly Cloudy 76º 1% NE 7 mph 77%
2am Partly Cloudy 75º 1% ENE 7 mph 77%
3am Partly Cloudy 74º 3% NE 6 mph 79%
4am Partly Cloudy 74º 3% NE 5 mph 80%
5am Mostly Clear 73º 4% NNE 6 mph 81%
6am Partly Cloudy 72º 4% NNE 6 mph 82%
7am Mostly Clear 71º 4% NNE 6 mph 84%
8am Mostly Sunny 72º 5% NNE 7 mph 83%
9am Mostly Sunny 76º 3% NNE 8 mph 75%
10am Partly Cloudy 79º 3% NNE 9 mph 68%
11am Mostly Sunny 81º 9% NE 9 mph 65%
12pm Partly Cloudy 83º 1% NE 10 mph 61%
1pm Partly Cloudy 84º 1% ENE 12 mph 60%
2pm Partly Cloudy 84º 1% ENE 13 mph 61%
3pm Mostly Sunny 85º 0% ENE 14 mph 60%
4pm Mostly Sunny 84º 1% ENE 13 mph 61%
5pm Mostly Sunny 83º 1% ENE 13 mph 61%
6pm Sunny 82º 1% ENE 11 mph 63%
7pm Sunny 80º 1% ENE 10 mph 67%
8pm Clear 78º 1% ENE 8 mph 72%
9pm Clear 77º 2% ENE 6 mph 76%
10pm Clear 77º 3% ENE 6 mph 77%
11pm Clear 75º 3% ENE 6 mph 80%
Thu
Sep 17
Mostly Sunny
View Hourly
87º / 71º 6% NE 10 mph 67%
12am Clear 75º 4% NE 4 mph 81%
1am Clear 74º 4% NE 3 mph 82%
2am Clear 73º 5% NE 3 mph 84%
3am Clear 73º 5% NNE 3 mph 85%
4am Clear 72º 5% NNE 3 mph 86%
5am Clear 72º 5% NNE 3 mph 87%
6am Clear 71º 6% NNE 4 mph 89%
7am Clear 71º 6% NNE 5 mph 89%
8am Sunny 72º 5% NNE 6 mph 85%
9am Mostly Sunny 76º 3% NNE 7 mph 77%
10am Partly Cloudy 79º 2% NNE 7 mph 69%
11am Sunny 82º 1% NE 7 mph 63%
12pm Sunny 83º 1% NE 8 mph 60%
1pm Sunny 85º 0% ENE 9 mph 58%
2pm Mostly Sunny 85º 0% ENE 10 mph 58%
3pm Mostly Sunny 85º 0% E 10 mph 59%
4pm Partly Cloudy 85º 0% E 9 mph 59%
5pm Mostly Sunny 83º 0% E 9 mph 59%
6pm Sunny 82º 0% E 7 mph 63%
7pm Sunny 80º 1% E 6 mph 68%
Fri
Sep 18
Sunny 89º / 73º 6% ENE 7 mph 68%
Sat
Sep 19
Partly Cloudy 88º / 74º 20% ENE 9 mph 74%
Sun
Sep 20
Isolated Thunderstorms 87º / 74º 32% ENE 8 mph 76%
Mon
Sep 21
Scattered Thunderstorms 86º / 74º 56% ENE 9 mph 80%
Tue
Sep 22
Scattered Thunderstorms 84º / 72º 55% ENE 10 mph 84%

Weather Radar for Fort Sumter, SC See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Fort Sumter, SC

Tonight
Low : 76ºF
ENE wind 17 to 20 kt. Partly cloudy. Seas around 4 ft.
Wednesday
High : 81ºF
NNE wind 16 to 19 kt becoming ENE in the afternoon. Partly sunny, then gradually becoming sunny. Seas around 4 ft.
Wednesday Night
Low : 75ºF
ENE wind 10 to 15 kt. Mostly clear. Seas 3 to 4 ft.
Thursday
High : 81ºF
ENE wind 11 to 13 kt. Sunny. Seas around 3 ft.
Thursday Night
Low : 75ºF
E wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 2 to 3 ft.
Friday
High : 82ºF
NNE wind 5 to 9 kt becoming SE in the afternoon. Sunny. Seas around 2 ft.
Friday Night
Low : 77ºF
SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Saturday
High : 82ºF
NNE wind 5 to 8 kt becoming E 10 to 13 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Saturday Night
Low : 77ºF
E wind 6 to 10 kt. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Seas around 2 ft.

NOAA Buoy Data Near Fort Sumter, SC See Map

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    Wind Speed Forecast for Fort Sumter, SC

    WednesdayThursday
    Wind Speed (MPH) 107571013843689
    12am4am8am12pm4pm8pm12am4am8am12pm4pm8pm
    MPH 107571013843689
    DIR ENEENENENNENEENEENENENNENNENEE

    Current Weather Conditions In Fort Sumter, SC

    As Of: 39 minutes ago

    • 79ºF
    • 84ºF
    • 10mph
    • 0º (ENE)
    • 16mph
    • Clear
    • 10mi
    • 30.22"
    • 75%
    • 0ºF

    The weather right now in Fort Sumter, SC is Clear. The current temperature is 79°F, and the expected high and low for today, Tuesday, September 15, 2026, are -° high temperature and 70°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the East Northeast. The wind is gusting to 16 mph. With the wind and the atmosphere the temperature feels like 84° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 75 percent, and air pressure at 30.22 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:06pm Tue Sep 15 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

    WHAT: East winds around 20 kt with gusts up to 30 kt and waves
    2 feet.

    WHERE: Charleston Harbor.

    WHEN: Until 8 PM EDT this evening.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&