Nearby Harbors
32.8333’ N, 79.7267’ W

South Dewees Island, SC

66°
H -°
L 53°
NE
11mph
Low tide
1:50 am
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South Dewees Island, SC Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Oct 25 		Mostly Clear
Close Hourly 		-º / 53º 5% NNE 8 mph 80%
9pm Mostly Clear 66º 1% NE 11 mph 73%
10pm Clear 65º 1% NE 12 mph 74%
11pm Clear 64º 1% NE 11 mph 75%
Mon
Oct 26 		Sunny
View Hourly 		74º / 52º 10% NNE 9 mph 68%
12am Clear 62º 1% NE 11 mph 82%
1am Clear 61º 2% NNE 11 mph 84%
2am Clear 60º 2% NNE 10 mph 84%
3am Clear 58º 2% NNE 10 mph 85%
4am Clear 57º 4% NNE 7 mph 84%
5am Clear 56º 4% NNE 7 mph 85%
6am Clear 55º 5% NNE 7 mph 86%
7am Clear 54º 5% NNE 7 mph 87%
8am Sunny 55º 10% N 7 mph 88%
9am Sunny 57º 11% NNE 8 mph 87%
10am Sunny 60º 3% NNE 9 mph 78%
11am Sunny 65º 2% NNE 9 mph 69%
12pm Sunny 68º 1% NNE 9 mph 62%
1pm Sunny 71º 1% NE 9 mph 58%
2pm Sunny 72º 0% NE 9 mph 56%
3pm Sunny 73º 0% NE 9 mph 55%
4pm Sunny 73º 0% NE 9 mph 55%
5pm Sunny 71º 0% NE 8 mph 57%
6pm Sunny 69º 1% ENE 6 mph 61%
7pm Clear 65º 2% NE 4 mph 73%
8pm Clear 63º 2% NE 3 mph 82%
9pm Clear 61º 2% NE 3 mph 86%
10pm Clear 60º 2% NNE 3 mph 86%
11pm Clear 59º 2% NNE 3 mph 86%
Tue
Oct 27 		Mostly Sunny
View Hourly 		75º / 56º 1% NE 8 mph 58%
12am Clear 58º 2% NNE 3 mph 89%
1am Clear 57º 2% NNE 3 mph 89%
2am Clear 56º 2% NNE 2 mph 89%
3am Clear 55º 2% NNE 3 mph 90%
4am Clear 55º 2% N 3 mph 90%
5am Clear 54º 2% N 3 mph 88%
6am Clear 53º 2% N 4 mph 87%
7am Clear 53º 2% NNE 4 mph 87%
8am Sunny 53º 2% N 4 mph 87%
9am Sunny 57º 1% NNE 6 mph 79%
10am Sunny 62º 0% NNE 6 mph 66%
11am Sunny 66º 0% NNE 7 mph 57%
12pm Sunny 69º 0% NE 7 mph 50%
1pm Mostly Sunny 72º 0% NE 7 mph 46%
2pm Mostly Sunny 73º 0% NE 8 mph 44%
3pm Partly Cloudy 74º 0% NE 8 mph 43%
4pm Sunny 73º 0% NE 8 mph 42%
5pm Sunny 72º 0% ENE 7 mph 46%
6pm Sunny 69º 0% ENE 6 mph 52%
7pm Clear 65º 0% ENE 5 mph 66%
8pm Clear 62º 1% ENE 3 mph 77%
Wed
Oct 28 		Partly Cloudy 76º / 63º 9% NE 13 mph 81%
Thu
Oct 29 		Partly Cloudy 76º / 60º 19% NE 12 mph 80%
Fri
Oct 30 		Mostly Sunny 78º / 62º 7% NE 10 mph 78%
Sat
Oct 31 		Mostly Cloudy 77º / 64º 12% NE 10 mph 80%
Sun
Nov 1 		Showers 76º / 62º 42% NE 8 mph 79%

Weather Radar for South Dewees Island, SC See Radar

See Radar Map

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Dewees Island, SC

Tonight
Low : 56ºF
NE wind 22 to 25 kt decreasing to 16 to 19 kt after midnight. Winds could gust as high as 31 kt. Mostly clear. Seas 6 to 7 ft.
Monday
High : 70ºF
NNE wind around 16 kt, with gusts as high as 22 kt. Sunny. Seas 5 to 6 ft.
Monday Night
Low : 57ºF
NNE wind around 10 kt. Mostly clear. Seas 4 to 5 ft.
Tuesday
High : 71ºF
NE wind 10 to 13 kt. Sunny. Seas around 4 ft.
Tuesday Night
Low : 60ºF
NE wind around 11 kt. Mostly clear. Seas around 4 ft.
Wednesday
High : 72ºF
NNE wind 13 to 16 kt increasing to 16 to 19 kt in the afternoon. Mostly sunny. Seas around 4 ft.
Wednesday Night
Low : 65ºF
NE wind 15 to 19 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 5 ft.
Thursday
High : 73ºF
NE wind 15 to 18 kt, with gusts as high as 24 kt. Mostly sunny. Seas around 5 ft.
Thursday Night
Low : 63ºF
NE wind 12 to 14 kt, with gusts as high as 21 kt. Mostly clear. Seas 4 to 5 ft.

NOAA Buoy Data Near South Dewees Island, SC See Map

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    Wind Speed Forecast for South Dewees Island, SC

    MondayTuesday
    Wind Speed (MPH) 11117898333677
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 11117898333677
    DIR NENNENNENNENENENENNENNNENEENE

    Current Weather Conditions In South Dewees Island, SC

    As Of: 14 minutes ago

    • 66ºF
    • 66ºF
    • 11mph
    • 0º (NE)
    • 19mph
    • Mostly Clear
    • 10mi
    • 30.29"
    • 73%
    • 0ºF

    The weather right now in South Dewees Island, SC is Mostly Clear. The current temperature is 66°F, and the expected high and low for today, Sunday, October 25, 2026, are -° high temperature and 53°F low temperature. The wind is currently blowing at 11 miles per hour, and coming from the Northeast. The wind is gusting to 19 mph. With the wind and the atmosphere the temperature feels like 66° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 73 percent, and air pressure at 30.29 in. Visibility is 10 nautical miles. There are 5 current weather alert(s).

    Weather Alerts
    Gale Warning - 7:38pm Sun Oct 25 2026

    ...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT MONDAY...

    WHAT: Northeast winds 25 to 35 kt with gusts up to 40 kt and
    seas 7 to 10 ft.

    WHERE: South Santee River to Edisto Beach out 20 NM.

    WHEN: Until 5 AM EDT Monday.

    IMPACTS: Strong winds will cause hazardous seas which could
    capsize or damage vessels and reduce visibility.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Mariners should alter plans to avoid these hazardous conditions.
    Remain in port, seek safe harbor, alter course, and/or secure the
    vessel for hazardous conditions.

    &&

    Rip Current Statement - 7:37pm Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY EVENING... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM 5 AM EDT MONDAY THROUGH MONDAY MORNING...

    WHAT: For the High Rip Current Risk, dangerous rip currents.
    For the High Surf Advisory, large breaking waves of 4 to 6 feet
    in the surf zone. For the Coastal Flood Advisory, up to one half
    foot of inundation above ground level expected along shorelines
    and tidal waterways (7.1 to 7.3 feet Mean Lower Low Water at
    Charleston). For the Coastal Flood Watch, one to two feet of
    inundation above ground level possible along shorelines and
    tidal waterways (7.9 to 8.1 feet Mean Lower Low Water at
    Charleston).

    WHERE: Coastal Colleton and Charleston Counties.

    WHEN: For the High Rip Current Risk, through Monday evening.
    For the High Surf Advisory, until 5 PM EDT Monday. For the
    Coastal Flood Advisory, until 10 PM EDT this evening. For the
    Coastal Flood Watch, from late tonight through Monday morning.

    IMPACTS: Significant saltwater inundation will render
    numerous roads impassable. Properties may also flood.
    Dangerous swimming and surfing conditions and localized beach
    erosion. Rip currents can sweep even the best swimmers away
    from shore into deeper water.

    ADDITIONAL DETAILS: High tide will occur around 7:56 PM today
    and 8:18 AM Monday at Charleston. Saltwater inundation will be
    possible 1 to 2 hours before and after high tide. Beach
    erosion is most likely to occur near the time of high tides.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    If travel is required, allow extra time as some roads may be
    closed. Do not drive around barricades or through water of
    unknown depth. Take the necessary actions to protect flood-prone
    property.

    Visit water.weather.gov for additional water level and flood
    impact information.

    Inexperienced swimmers should remain out of the water due to
    dangerous surf conditions.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Time of high total tides are approximate to the nearest hour.

    Charleston Harbor SC
    MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
    MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    25/08 PM 7.2 1.5 1.5 N/A Minor
    26/08 AM 8.0 2.2 1.3 N/A Major
    26/09 PM 7.0 1.2 1.3 N/A Minor
    27/09 AM 7.9 2.1 1.0 N/A Moderate
    27/09 PM 6.5 0.7 0.9 N/A None
    28/10 AM 7.7 1.9 0.8 N/A Moderate

    &&

    Coastal Flood Watch - 7:37pm Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY EVENING... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM 5 AM EDT MONDAY THROUGH MONDAY MORNING...

    WHAT: For the High Rip Current Risk, dangerous rip currents.
    For the High Surf Advisory, large breaking waves of 4 to 6 feet
    in the surf zone. For the Coastal Flood Advisory, up to one half
    foot of inundation above ground level expected along shorelines
    and tidal waterways (7.1 to 7.3 feet Mean Lower Low Water at
    Charleston). For the Coastal Flood Watch, one to two feet of
    inundation above ground level possible along shorelines and
    tidal waterways (7.9 to 8.1 feet Mean Lower Low Water at
    Charleston).

    WHERE: Coastal Colleton and Charleston Counties.

    WHEN: For the High Rip Current Risk, through Monday evening.
    For the High Surf Advisory, until 5 PM EDT Monday. For the
    Coastal Flood Advisory, until 10 PM EDT this evening. For the
    Coastal Flood Watch, from late tonight through Monday morning.

    IMPACTS: Significant saltwater inundation will render
    numerous roads impassable. Properties may also flood.
    Dangerous swimming and surfing conditions and localized beach
    erosion. Rip currents can sweep even the best swimmers away
    from shore into deeper water.

    ADDITIONAL DETAILS: High tide will occur around 7:56 PM today
    and 8:18 AM Monday at Charleston. Saltwater inundation will be
    possible 1 to 2 hours before and after high tide. Beach
    erosion is most likely to occur near the time of high tides.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    If travel is required, allow extra time as some roads may be
    closed. Do not drive around barricades or through water of
    unknown depth. Take the necessary actions to protect flood-prone
    property.

    Visit water.weather.gov for additional water level and flood
    impact information.

    Inexperienced swimmers should remain out of the water due to
    dangerous surf conditions.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Time of high total tides are approximate to the nearest hour.

    Charleston Harbor SC
    MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
    MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    25/08 PM 7.2 1.5 1.5 N/A Minor
    26/08 AM 8.0 2.2 1.3 N/A Major
    26/09 PM 7.0 1.2 1.3 N/A Minor
    27/09 AM 7.9 2.1 1.0 N/A Moderate
    27/09 PM 6.5 0.7 0.9 N/A None
    28/10 AM 7.7 1.9 0.8 N/A Moderate

    &&

    High Surf Advisory - 7:37pm Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY EVENING... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM 5 AM EDT MONDAY THROUGH MONDAY MORNING...

    WHAT: For the High Rip Current Risk, dangerous rip currents.
    For the High Surf Advisory, large breaking waves of 4 to 6 feet
    in the surf zone. For the Coastal Flood Advisory, up to one half
    foot of inundation above ground level expected along shorelines
    and tidal waterways (7.1 to 7.3 feet Mean Lower Low Water at
    Charleston). For the Coastal Flood Watch, one to two feet of
    inundation above ground level possible along shorelines and
    tidal waterways (7.9 to 8.1 feet Mean Lower Low Water at
    Charleston).

    WHERE: Coastal Colleton and Charleston Counties.

    WHEN: For the High Rip Current Risk, through Monday evening.
    For the High Surf Advisory, until 5 PM EDT Monday. For the
    Coastal Flood Advisory, until 10 PM EDT this evening. For the
    Coastal Flood Watch, from late tonight through Monday morning.

    IMPACTS: Significant saltwater inundation will render
    numerous roads impassable. Properties may also flood.
    Dangerous swimming and surfing conditions and localized beach
    erosion. Rip currents can sweep even the best swimmers away
    from shore into deeper water.

    ADDITIONAL DETAILS: High tide will occur around 7:56 PM today
    and 8:18 AM Monday at Charleston. Saltwater inundation will be
    possible 1 to 2 hours before and after high tide. Beach
    erosion is most likely to occur near the time of high tides.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    If travel is required, allow extra time as some roads may be
    closed. Do not drive around barricades or through water of
    unknown depth. Take the necessary actions to protect flood-prone
    property.

    Visit water.weather.gov for additional water level and flood
    impact information.

    Inexperienced swimmers should remain out of the water due to
    dangerous surf conditions.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Time of high total tides are approximate to the nearest hour.

    Charleston Harbor SC
    MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
    MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    25/08 PM 7.2 1.5 1.5 N/A Minor
    26/08 AM 8.0 2.2 1.3 N/A Major
    26/09 PM 7.0 1.2 1.3 N/A Minor
    27/09 AM 7.9 2.1 1.0 N/A Moderate
    27/09 PM 6.5 0.7 0.9 N/A None
    28/10 AM 7.7 1.9 0.8 N/A Moderate

    &&

    Coastal Flood Advisory - 7:37pm Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY EVENING... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM 5 AM EDT MONDAY THROUGH MONDAY MORNING...

    WHAT: For the High Rip Current Risk, dangerous rip currents.
    For the High Surf Advisory, large breaking waves of 4 to 6 feet
    in the surf zone. For the Coastal Flood Advisory, up to one half
    foot of inundation above ground level expected along shorelines
    and tidal waterways (7.1 to 7.3 feet Mean Lower Low Water at
    Charleston). For the Coastal Flood Watch, one to two feet of
    inundation above ground level possible along shorelines and
    tidal waterways (7.9 to 8.1 feet Mean Lower Low Water at
    Charleston).

    WHERE: Coastal Colleton and Charleston Counties.

    WHEN: For the High Rip Current Risk, through Monday evening.
    For the High Surf Advisory, until 5 PM EDT Monday. For the
    Coastal Flood Advisory, until 10 PM EDT this evening. For the
    Coastal Flood Watch, from late tonight through Monday morning.

    IMPACTS: Significant saltwater inundation will render
    numerous roads impassable. Properties may also flood.
    Dangerous swimming and surfing conditions and localized beach
    erosion. Rip currents can sweep even the best swimmers away
    from shore into deeper water.

    ADDITIONAL DETAILS: High tide will occur around 7:56 PM today
    and 8:18 AM Monday at Charleston. Saltwater inundation will be
    possible 1 to 2 hours before and after high tide. Beach
    erosion is most likely to occur near the time of high tides.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    If travel is required, allow extra time as some roads may be
    closed. Do not drive around barricades or through water of
    unknown depth. Take the necessary actions to protect flood-prone
    property.

    Visit water.weather.gov for additional water level and flood
    impact information.

    Inexperienced swimmers should remain out of the water due to
    dangerous surf conditions.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Time of high total tides are approximate to the nearest hour.

    Charleston Harbor SC
    MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
    MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Waves Flood
    ft MLLW ft MHHW ft ft Impact
    -------- --------- --------- --------- ------- --------
    25/08 PM 7.2 1.5 1.5 N/A Minor
    26/08 AM 8.0 2.2 1.3 N/A Major
    26/09 PM 7.0 1.2 1.3 N/A Minor
    27/09 AM 7.9 2.1 1.0 N/A Moderate
    27/09 PM 6.5 0.7 0.9 N/A None
    28/10 AM 7.7 1.9 0.8 N/A Moderate

    &&

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