Fort Sumter, SC Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jun 23 		Partly Cloudy
Close Hourly 		92º / 74º 15% WSW 16 mph 54%
2pm Partly Cloudy 91º 15% WSW 16 mph 55%
3pm Partly Cloudy 92º 15% WSW 17 mph 53%
4pm Partly Cloudy 92º 15% WSW 15 mph 52%
5pm Partly Cloudy 91º 15% WSW 13 mph 54%
6pm Partly Cloudy 90º 15% WSW 12 mph 54%
7pm Partly Cloudy 89º 0% W 9 mph 55%
8pm Mostly Sunny 87º 0% W 8 mph 58%
9pm Clear 85º 1% WNW 6 mph 63%
10pm Mostly Clear 84º 0% WNW 5 mph 63%
11pm Clear 82º 0% WNW 5 mph 64%
Wed
Jun 24 		Partly Cloudy
View Hourly 		84º / 73º 15% ENE 12 mph 69%
12am Clear 81º 0% NW 4 mph 67%
1am Mostly Clear 79º 1% NNW 4 mph 72%
2am Mostly Clear 77º 2% NNW 4 mph 76%
3am Mostly Clear 76º 3% N 2 mph 77%
4am Mostly Clear 76º 4% N 3 mph 79%
5am Mostly Clear 75º 4% NNE 5 mph 81%
6am Mostly Clear 75º 5% NNE 5 mph 83%
7am Partly Cloudy 75º 15% NNE 6 mph 85%
8am Partly Cloudy 77º 5% NE 7 mph 83%
9am Partly Cloudy 79º 6% NE 10 mph 77%
10am Partly Cloudy 81º 6% NE 10 mph 72%
11am Partly Cloudy 82º 3% ENE 10 mph 67%
12pm Partly Cloudy 83º 2% ENE 11 mph 64%
1pm Partly Cloudy 83º 3% E 11 mph 63%
2pm Partly Cloudy 83º 4% E 12 mph 64%
3pm Partly Cloudy 83º 4% E 11 mph 64%
4pm Mostly Sunny 83º 4% E 11 mph 64%
5pm Sunny 83º 2% E 11 mph 63%
6pm Mostly Sunny 82º 2% E 9 mph 66%
7pm Mostly Sunny 81º 3% E 8 mph 70%
8pm Sunny 80º 2% E 7 mph 74%
9pm Mostly Clear 78º 3% E 5 mph 79%
10pm Mostly Clear 78º 3% ENE 4 mph 81%
11pm Clear 77º 4% E 3 mph 84%
Thu
Jun 25 		Partly Cloudy
View Hourly 		87º / 77º 20% ESE 9 mph 71%
12am Clear 76º 4% E 2 mph 87%
1am Mostly Clear 76º 5% E 1 mph 90%
2am Clear 75º 5% ENE 1 mph 90%
3am Clear 75º 6% ENE 1 mph 91%
4am Mostly Clear 74º 6% ENE 0 mph 93%
5am Mostly Clear 74º 7% ENE 0 mph 94%
6am Partly Cloudy 74º 7% ENE 0 mph 93%
7am Partly Cloudy 75º 7% ENE 1 mph 92%
8am Partly Cloudy 78º 7% ENE 2 mph 86%
9am Partly Cloudy 81º 9% ENE 3 mph 78%
10am Partly Cloudy 83º 7% E 4 mph 72%
11am Partly Cloudy 84º 5% E 5 mph 68%
12pm Mostly Sunny 85º 2% ESE 6 mph 66%
1pm Partly Cloudy 86º 21% ESE 8 mph 64%
Fri
Jun 26 		Partly Cloudy 87º / 77º 24% S 12 mph 76%
Sat
Jun 27 		Mostly Sunny 90º / 78º 22% SW 13 mph 71%
Sun
Jun 28 		PM Thunderstorms 92º / 78º 40% SW 11 mph 68%
Mon
Jun 29 		Partly Cloudy 89º / 78º 24% ENE 10 mph 73%
Tue
Jun 30 		Mostly Sunny 91º / 78º 19% E 11 mph 69%

Weather Radar for Fort Sumter, SC See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Fort Sumter, SC

This Afternoon
High : 88ºF
SW wind around 20 kt, with gusts as high as 26 kt. Mostly sunny. Seas around 3 ft.
Tonight
Low : 77ºF
WSW wind 8 to 11 kt becoming NNW after midnight. Partly cloudy. Seas 2 to 3 ft.
Wednesday
High : 80ºF
N wind 11 to 13 kt becoming E in the afternoon. Sunny. Seas around 2 ft.
Wednesday Night
Low : 79ºF
E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Thursday
High : 81ºF
Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Sunny. Seas around 2 ft.
Thursday Night
Low : 80ºF
SE wind 5 to 9 kt becoming S after midnight. Mostly clear. Seas around 2 ft.
Friday
High : 83ºF
Variable winds less than 5 kt becoming S 8 to 13 kt in the morning. Sunny. Seas around 2 ft.
Friday Night
Low : 82ºF
SW wind around 12 kt. Mostly clear. Seas around 3 ft.
Saturday
High : 86ºF
SSW wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 22 kt. Sunny. Seas 2 to 3 ft.

NOAA Buoy Data Near Fort Sumter, SC See Map

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    Wind Speed Forecast for Fort Sumter, SC

    TuesdayWednesdayThursday
    Wind Speed (MPH) 1612545101294104
    6pm10pm2am6am10am2pm6pm10pm2am6am10am2pm
    MPH 1612545101294104
    DIR WSWWSWWNWNNWNNENEEEENEENEENEE

    Current Weather Conditions In Fort Sumter, SC

    As Of: 39 minutes ago

    • 91ºF
    • 101ºF
    • 16mph
    • 0º (WSW)
    • 28mph
    • Partly Cloudy
    • 10mi
    • 29.93"
    • 55%
    • 0ºF

    The weather right now in Fort Sumter, SC is Partly Cloudy. The current temperature is 91°F, and the expected high and low for today, Tuesday, June 23, 2026, are 92° high temperature and 74°F low temperature. The wind is currently blowing at 16 miles per hour, and coming from the West Southwest. The wind is gusting to 28 mph. With the wind and the atmosphere the temperature feels like 101° Fahrenheit. Expected precipitation is 15 percent, with current humidity at 55 percent, and air pressure at 29.93 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 5:02am Tue Jun 23 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...

    WHAT: Southwest winds 15 to 20 kt with gusts up to 25 kt
    expected.

    WHERE: Charleston Harbor.

    WHEN: From 8 AM this morning to 5 PM EDT this afternoon.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

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

    &&