Marine Weather and Tide Forecast for Bluffton, SC
 | Sunrise 6:15 AM Sunset 8:30 PM Moonrise 3:25 AM Moonset 6:21 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
AMZ362 Coastal Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 539 Am Edt Sat Jun 13 2026
Today - W winds 5 to 10 kt, becoming sw this afternoon. Seas 2 ft. Wave detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms late.
Tonight - SW winds 10 to 15 kt. Seas 2 ft. Wave detail: S 2 ft at 4 seconds and se 1 foot at 8 seconds.
Sun - SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: S 3 ft at 4 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms in the afternoon.
Sun night - SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave detail: S 4 ft at 5 seconds and E 1 foot at 9 seconds. A slight chance of showers and tstms.
Mon - SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers and tstms in the afternoon.
Mon night - SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 ft. Wave detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. Showers likely with a chance of tstms.
Tue - W winds 15 to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms.
Tue night - SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely with a chance of tstms.
Wed - SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Wed night - SW winds 15 to 20 kt. Seas 3 to 4 ft.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
AMZ300 539 Am Edt Sat Jun 13 2026
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - Subtropical high pressure will remain the primary influence across the local waters through the weekend. A cold front is expected to move through by the middle of next week.
7 Day Forecast for Marine Location Near Bluffton, SC
NEW! Add second zone forecast
| Bluffton Click for Map Sat -- 01:45 AM EDT -0.00 feet Low Tide Sat -- 04:25 AM EDT Moonrise Sat -- 06:16 AM EDT Sunrise Sat -- 07:52 AM EDT 7.66 feet High Tide Sat -- 01:50 PM EDT -0.80 feet Low Tide Sat -- 07:20 PM EDT Moonset Sat -- 08:22 PM EDT 9.83 feet High Tide Sat -- 08:30 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Bluffton, May River, South Carolina, Tide feet
| 12 am |
| 2 |
| 1 am |
| 0.4 |
| 2 am |
| 0 |
| 3 am |
| 0.9 |
| 4 am |
| 2.5 |
| 5 am |
| 4.5 |
| 6 am |
| 6.2 |
| 7 am |
| 7.3 |
| 8 am |
| 7.6 |
| 9 am |
| 7 |
| 10 am |
| 5.6 |
| 11 am |
| 3.5 |
| 12 pm |
| 1.4 |
| 1 pm |
| -0.3 |
| 2 pm |
| -0.8 |
| 3 pm |
| 0.1 |
| 4 pm |
| 2.1 |
| 5 pm |
| 4.6 |
| 6 pm |
| 7.1 |
| 7 pm |
| 8.9 |
| 8 pm |
| 9.8 |
| 9 pm |
| 9.6 |
| 10 pm |
| 8.4 |
| 11 pm |
| 6.4 |
Tide / Current for Mackay Creek, south entrance (depth 10 ft), Calibogue Sound, South Carolina Current
| Mackay Creek Click for Map Flood direction 33 true Ebb direction 212 true Sat -- 02:18 AM EDT 0.00 knots Slack Sat -- 04:25 AM EDT Moonrise Sat -- 04:40 AM EDT 0.52 knots Max Flood Sat -- 06:15 AM EDT Sunrise Sat -- 08:21 AM EDT -0.00 knots Slack Sat -- 10:47 AM EDT -1.14 knots Max Ebb Sat -- 02:13 PM EDT 0.00 knots Slack Sat -- 05:00 PM EDT 0.78 knots Max Flood Sat -- 07:20 PM EDT Moonset Sat -- 08:30 PM EDT Sunset Sat -- 08:56 PM EDT -0.00 knots Slack Sat -- 11:39 PM EDT -1.40 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
Mackay Creek, south entrance (depth 10 ft), Calibogue Sound, South Carolina Current, knots
| 12 am |
| -1.2 |
| 1 am |
| -0.8 |
| 2 am |
| -0.2 |
| 3 am |
| 0.2 |
| 4 am |
| 0.5 |
| 5 am |
| 0.5 |
| 6 am |
| 0.4 |
| 7 am |
| 0.3 |
| 8 am |
| 0.1 |
| 9 am |
| -0.5 |
| 10 am |
| -1 |
| 11 am |
| -1.1 |
| 12 pm |
| -1 |
| 1 pm |
| -0.7 |
| 2 pm |
| -0.2 |
| 3 pm |
| 0.3 |
| 4 pm |
| 0.7 |
| 5 pm |
| 0.8 |
| 6 pm |
| 0.7 |
| 7 pm |
| 0.5 |
| 8 pm |
| 0.3 |
| 9 pm |
| -0.1 |
| 10 pm |
| -0.9 |
| 11 pm |
| -1.3 |
FXUS62 KCHS 130630 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 230 AM EDT Sat Jun 13 2026
WHAT HAS CHANGED
The Aviation Section has been updated for the 00Z TAF issuance
KEY MESSAGES
- 1) Unseasonably hot weather will continue through at least Sunday.
- 2) Daily coverage of showers and thunderstorms expected to increase through the weekend and into next week as a more typical summertime pattern returns to the region.
- 3) Minor coastal flooding possible along Charleston and Colleton County coasts during evening high tides this weekend into early next week.
DISCUSSION
KEY MESSAGE 1: Unseasonably hot weather will continue through at least Sunday.
Deep westerly flow will persist today, maintaining oppressively hot temperatures across the area. The sea breeze will only slowly creep inland during the afternoon. Farther inland, relatively dry air aloft should mix down, with surface dewpoints in the upper 60s to lower 70s for much of the afternoon. The coastal corridor is expected to see upper 90s temps overlap with mid to upper 70s dewpoints, where heat indices could reach 105-110F for a few hours. The one question mark is how quickly diurnal convection spreads cold pools and potentially drops the temps over a substantial area. There were quite a few spots that reached criteria on Friday, and today looks like a similar pattern. We issued a Heat Advisory for the coastal zones but also included all of Berkeley County, until 5pm.
Sunday will continue the heat wave, with potentially a slightly larger area of Heat Advisory criteria if the sea breeze makes it farther inland. We should, however, have pretty good afternoon convection coverage as a lee trough strengthens.
KEY MESSAGE 2: Daily coverage of showers and thunderstorms expected to increase through the weekend and into next week as a more typical summertime pattern returns to the region.
Through the weekend and into next week, the pattern across southeast GA and southeast SC will gradually shift toward a typical summertime pattern supportive of showers and thunderstorms each day. Aloft, the ridging that has been in place for the last several days will break down and be replaced by a more zonal flow through Sunday. At the surface, a weak front/trough is expected to drift into the vicinity Saturday and Sunday before lifting to the north. Overall thinking remains unchanged in that today and Sunday will result in a modest increase in convective coverage, given plenty of instability and an afternoon sea-breeze expected each day.
Similar to what was observed on Friday, mid-level flow will remain on the weak side throughout the weekend, resulting in storm motions of only 10-15 knots. Given precipitable water values remaining near 2 inches, locally heavy rainfall will again be a possibility today and Sunday. The aforementioned front/trough looks to setup just east of the I-95 corridor today, with additional lift provided by an afternoon sea-breeze, and will together act as a focus for shower and thunderstorms development this afternoon. For areas that see rain today, HRRR probabilities for an inch are as high as 70%, with probabilities for 3 inches on the low end at 10%. Probabilities drop to isolated 50% chances on Sunday, likely due to marginally faster storm motions.
Given weak shear, pulse showers and thunderstorms will continue to remain the primary thunderstorm type today and Sunday. SBCAPE values of 1500-2000 J/kg will allow for storms to grow quickly, possibly producing small hail in its initial stages as was observed on Friday (though freezing levels are a smidge higher), before falling apart relatively quickly and transitioning to a damaging wind threat as DCAPE values remain near 1000 J/kg before dissipating.
As we head into the early and middle part of next week, large and broad troughing is expected to encompass the eastern half of the CONUS. This will likely result in a more significant increase in coverage in the early to middle part of next week due to the combination of the presence of the trough aloft and an approaching cold front, with some models stalling the front across the area before washing it out into the middle of next week, with others pushing it through though warm temperatures remain.
KEY MESSAGE 3: Minor coastal flooding possible along Charleston and Colleton County coasts during evening high tides this weekend into early next week.
Breezy south-southeasterly winds post sea breeze each day along with the upcoming lunar Perigee (June 14th) and New Moon (June 15th)
should result in elevated tidal departures above 1/2 ft this weekend into early next week, setting the stage for minor coastal flooding along the Charleston and Colleton County coasts during evening high tide cycles. The latest TWL forecast calls for 6.9 - 7.1 ft MLLW in the Charleston Harbor Saturday evening, and similar water levels are possible during evening high tides into early next week as astronomical influences peak and breezy onshore winds persist. Coastal Flood Advisories could eventually be needed for the Charleston and Colleton county coastlines.
AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
6Z TAFs: VFR conditions expected for the overnight and morning period with light southwesterly winds. Similar to Friday, scattered afternoon showers and thunderstorms are expected, likely producing TEMPO flight restrictions at times, and have thus included PROB30 groups at all TAF sites.
Extended Aviation Outlook: VFR conditions should prevail at CHS/JZI/SAV terminals on Sunday, although TEMPO flight restrictions are possible with afternoon showers/thunderstorms throughout the weekend. Chances for flight restrictions increase early next week with shower/thunderstorm coverage expanding locally ahead of an arriving cold front.
MARINE
Surface high pressure will prevail over the marine zones today. S to SW winds will remain close to 15 knots, with gusts to around 20 knots along the coastline each afternoon associated with the sea breeze, with conditions remaining below small craft criteria through Sunday morning. A prefrontal trough begins to form on Sunday, yielding an enhanced pressure gradient leading to wind gusts in the low 20 knot range, possibly reaching as high as 25 knots during the overnight hours into Monday and again Tuesday. A cold front is expected to move into the vicinity during the early/middle part of next week, continuing chances for breezy winds, though seas look to remain below 6 feet.
CLIMATE
Record High Temperatures:
June 13 KCHS: 99/2011 KCXM: 96/1998 KSAV: 102/2011
June 14 KCHS: 99/2010 KCXM: 97/1981
June 15 KCHS: 98/2015
Record High Minimum Temperatures:
June 13 KCHS: 80/2013 KCXM: 82/1998 KSAV: 80/1880
June 14 KCHS: 79/2010 KCXM: 81/2010
June 15 KCHS: 80/2010
June 18 KCHS: 78/2015
June 19 KCHS: 79/2025 KCXM: 81/2025 KSAV: 79/1881
CHS WATCHES/WARNINGS/ADVISORIES
GA...Heat Advisory from 11 AM this morning to 5 PM EDT this afternoon for GAZ217-219-239-241.
SC...Heat Advisory from 11 AM this morning to 5 PM EDT this afternoon for SCZ045-148>152.
MARINE...None.
Area Forecast Discussion National Weather Service Charleston SC 230 AM EDT Sat Jun 13 2026
WHAT HAS CHANGED
The Aviation Section has been updated for the 00Z TAF issuance
KEY MESSAGES
- 1) Unseasonably hot weather will continue through at least Sunday.
- 2) Daily coverage of showers and thunderstorms expected to increase through the weekend and into next week as a more typical summertime pattern returns to the region.
- 3) Minor coastal flooding possible along Charleston and Colleton County coasts during evening high tides this weekend into early next week.
DISCUSSION
KEY MESSAGE 1: Unseasonably hot weather will continue through at least Sunday.
Deep westerly flow will persist today, maintaining oppressively hot temperatures across the area. The sea breeze will only slowly creep inland during the afternoon. Farther inland, relatively dry air aloft should mix down, with surface dewpoints in the upper 60s to lower 70s for much of the afternoon. The coastal corridor is expected to see upper 90s temps overlap with mid to upper 70s dewpoints, where heat indices could reach 105-110F for a few hours. The one question mark is how quickly diurnal convection spreads cold pools and potentially drops the temps over a substantial area. There were quite a few spots that reached criteria on Friday, and today looks like a similar pattern. We issued a Heat Advisory for the coastal zones but also included all of Berkeley County, until 5pm.
Sunday will continue the heat wave, with potentially a slightly larger area of Heat Advisory criteria if the sea breeze makes it farther inland. We should, however, have pretty good afternoon convection coverage as a lee trough strengthens.
KEY MESSAGE 2: Daily coverage of showers and thunderstorms expected to increase through the weekend and into next week as a more typical summertime pattern returns to the region.
Through the weekend and into next week, the pattern across southeast GA and southeast SC will gradually shift toward a typical summertime pattern supportive of showers and thunderstorms each day. Aloft, the ridging that has been in place for the last several days will break down and be replaced by a more zonal flow through Sunday. At the surface, a weak front/trough is expected to drift into the vicinity Saturday and Sunday before lifting to the north. Overall thinking remains unchanged in that today and Sunday will result in a modest increase in convective coverage, given plenty of instability and an afternoon sea-breeze expected each day.
Similar to what was observed on Friday, mid-level flow will remain on the weak side throughout the weekend, resulting in storm motions of only 10-15 knots. Given precipitable water values remaining near 2 inches, locally heavy rainfall will again be a possibility today and Sunday. The aforementioned front/trough looks to setup just east of the I-95 corridor today, with additional lift provided by an afternoon sea-breeze, and will together act as a focus for shower and thunderstorms development this afternoon. For areas that see rain today, HRRR probabilities for an inch are as high as 70%, with probabilities for 3 inches on the low end at 10%. Probabilities drop to isolated 50% chances on Sunday, likely due to marginally faster storm motions.
Given weak shear, pulse showers and thunderstorms will continue to remain the primary thunderstorm type today and Sunday. SBCAPE values of 1500-2000 J/kg will allow for storms to grow quickly, possibly producing small hail in its initial stages as was observed on Friday (though freezing levels are a smidge higher), before falling apart relatively quickly and transitioning to a damaging wind threat as DCAPE values remain near 1000 J/kg before dissipating.
As we head into the early and middle part of next week, large and broad troughing is expected to encompass the eastern half of the CONUS. This will likely result in a more significant increase in coverage in the early to middle part of next week due to the combination of the presence of the trough aloft and an approaching cold front, with some models stalling the front across the area before washing it out into the middle of next week, with others pushing it through though warm temperatures remain.
KEY MESSAGE 3: Minor coastal flooding possible along Charleston and Colleton County coasts during evening high tides this weekend into early next week.
Breezy south-southeasterly winds post sea breeze each day along with the upcoming lunar Perigee (June 14th) and New Moon (June 15th)
should result in elevated tidal departures above 1/2 ft this weekend into early next week, setting the stage for minor coastal flooding along the Charleston and Colleton County coasts during evening high tide cycles. The latest TWL forecast calls for 6.9 - 7.1 ft MLLW in the Charleston Harbor Saturday evening, and similar water levels are possible during evening high tides into early next week as astronomical influences peak and breezy onshore winds persist. Coastal Flood Advisories could eventually be needed for the Charleston and Colleton county coastlines.
AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
6Z TAFs: VFR conditions expected for the overnight and morning period with light southwesterly winds. Similar to Friday, scattered afternoon showers and thunderstorms are expected, likely producing TEMPO flight restrictions at times, and have thus included PROB30 groups at all TAF sites.
Extended Aviation Outlook: VFR conditions should prevail at CHS/JZI/SAV terminals on Sunday, although TEMPO flight restrictions are possible with afternoon showers/thunderstorms throughout the weekend. Chances for flight restrictions increase early next week with shower/thunderstorm coverage expanding locally ahead of an arriving cold front.
MARINE
Surface high pressure will prevail over the marine zones today. S to SW winds will remain close to 15 knots, with gusts to around 20 knots along the coastline each afternoon associated with the sea breeze, with conditions remaining below small craft criteria through Sunday morning. A prefrontal trough begins to form on Sunday, yielding an enhanced pressure gradient leading to wind gusts in the low 20 knot range, possibly reaching as high as 25 knots during the overnight hours into Monday and again Tuesday. A cold front is expected to move into the vicinity during the early/middle part of next week, continuing chances for breezy winds, though seas look to remain below 6 feet.
CLIMATE
Record High Temperatures:
June 13 KCHS: 99/2011 KCXM: 96/1998 KSAV: 102/2011
June 14 KCHS: 99/2010 KCXM: 97/1981
June 15 KCHS: 98/2015
Record High Minimum Temperatures:
June 13 KCHS: 80/2013 KCXM: 82/1998 KSAV: 80/1880
June 14 KCHS: 79/2010 KCXM: 81/2010
June 15 KCHS: 80/2010
June 18 KCHS: 78/2015
June 19 KCHS: 79/2025 KCXM: 81/2025 KSAV: 79/1881
CHS WATCHES/WARNINGS/ADVISORIES
GA...Heat Advisory from 11 AM this morning to 5 PM EDT this afternoon for GAZ217-219-239-241.
SC...Heat Advisory from 11 AM this morning to 5 PM EDT this afternoon for SCZ045-148>152.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| FPKG1 - 8670870 - Fort Pulaski, GA | 14 mi | 48 min | W 2.9G | 29.95 | ||||
| 41033 | 24 mi | 58 min | WSW 7.8G | 81°F | 81°F | 29.93 | 74°F | |
| 41067 | 24 mi | 71 min | 81°F | |||||
| ACXS1 - ACE Basin Reserve, SC | 30 mi | 81 min | 0 | 76°F | 29.92 | 74°F |
Wind History for Fort Pulaski, GA
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KHXD Hilton Head Airport US | 8 sm | 11 min | calm | 10 sm | Clear | 77°F | 73°F | 89% | 29.97 | |
| KNBC Beaufort MCAS Merritt Field US | 18 sm | 10 min | calm | 10 sm | Clear | 75°F | 72°F | 89% | 29.95 | |
| KSAV Savannah Hilton Head International Airport US | 20 sm | 13 min | WSW 03 | 10 sm | Partly Cloudy | 73°F | 72°F | 94% | 29.96 | |
| KSVN Hunter Army Air Field US | 22 sm | 11 min | calm | 10 sm | Clear | 75°F | 72°F | 89% | 29.92 |
Link to 5 hour of 5 minute data for KHXD
Terminal Aerodrome Forecast (TAF) for KHXD
Wind History Graph: HXD
(wind in knots)
GEOS Local Image of southeast
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Charleston, SC,
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