Marine Weather and Tide Forecast for Hilton Head Island, SC
April 18, 2025 4:01 AM EDT (08:01 UTC) Change Location
![]() | Sunrise 6:48 AM Sunset 7:55 PM Moonrise 12:00 AM Moonset 9:14 AM |
AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 335 Am Edt Fri Apr 18 2025
Today - SE winds 10 kt, increasing to 10 to 15 kt this afternoon. Seas 2 to 3 ft. Wave detail: E 2 ft at 5 seconds and se 1 foot at 8 seconds.
Tonight - S winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 5 seconds and se 1 foot at 8 seconds.
Sat - S winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: se 3 ft at 7 seconds.
Sat night - S winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: se 3 ft at 6 seconds.
Sun - S winds 5 kt. Seas 2 to 3 ft. Wave detail: se 3 ft at 7 seconds.
Sun night - SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: se 3 ft at 7 seconds.
Mon - S winds 5 to 10 kt. Seas 2 to 3 ft.
Mon night - S winds 10 kt. Seas 2 to 3 ft.
Tue - SW winds 5 to 10 kt. Seas 2 to 3 ft.
Tue night - S winds 5 to 10 kt. Seas 2 to 3 ft.
AMZ300 335 Am Edt Fri Apr 18 2025
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - High pressure will remain the primary feature through the weekend and into early next week. A front could spread across our region by the middle of next week.
7 Day Forecast for Marine Location Near Hilton Head Island, SC

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Skull Creek Click for Map Fri -- 12:17 AM EDT 7.29 feet High Tide Fri -- 12:35 AM EDT Moonrise Fri -- 06:43 AM EDT 1.02 feet Low Tide Fri -- 06:50 AM EDT Sunrise Fri -- 10:14 AM EDT Moonset Fri -- 12:45 PM EDT 6.20 feet High Tide Fri -- 06:35 PM EDT 0.97 feet Low Tide Fri -- 07:54 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |   |
Skull Creek, south entrance, Hilton Head Island, South Carolina, Tide feet
12 am |
7.3 |
1 am |
7.1 |
2 am |
6.4 |
3 am |
5.2 |
4 am |
3.7 |
5 am |
2.3 |
6 am |
1.3 |
7 am |
1 |
8 am |
1.7 |
9 am |
2.9 |
10 am |
4.3 |
11 am |
5.4 |
12 pm |
6 |
1 pm |
6.2 |
2 pm |
5.7 |
3 pm |
4.7 |
4 pm |
3.3 |
5 pm |
2 |
6 pm |
1.1 |
7 pm |
1 |
8 pm |
1.8 |
9 pm |
3.2 |
10 pm |
4.7 |
11 pm |
6 |
Savannah River Entrance Click for Map Fri -- 12:35 AM EDT Moonrise Fri -- 01:23 AM EDT -0.00 knots Slack Fri -- 04:19 AM EDT -1.58 knots Max Ebb Fri -- 06:50 AM EDT Sunrise Fri -- 07:50 AM EDT 0.00 knots Slack Fri -- 10:11 AM EDT 1.40 knots Max Flood Fri -- 10:15 AM EDT Moonset Fri -- 01:32 PM EDT -0.00 knots Slack Fri -- 04:13 PM EDT -1.38 knots Max Ebb Fri -- 07:27 PM EDT 0.00 knots Slack Fri -- 07:55 PM EDT Sunset Fri -- 10:22 PM EDT 1.67 knots Max Flood Tide / Current data from XTide NOT FOR NAVIGATION |   |
Savannah River Entrance, Georgia Current, knots
12 am |
0.7 |
1 am |
0.2 |
2 am |
-0.4 |
3 am |
-1.2 |
4 am |
-1.6 |
5 am |
-1.5 |
6 am |
-1.3 |
7 am |
-0.7 |
8 am |
0.2 |
9 am |
1 |
10 am |
1.4 |
11 am |
1.2 |
12 pm |
0.8 |
1 pm |
0.3 |
2 pm |
-0.3 |
3 pm |
-1 |
4 pm |
-1.4 |
5 pm |
-1.2 |
6 pm |
-0.8 |
7 pm |
-0.3 |
8 pm |
0.4 |
9 pm |
1.2 |
10 pm |
1.6 |
11 pm |
1.6 |
Area Discussion for Charleston, SC
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FXUS62 KCHS 180628 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 228 AM EDT Fri Apr 18 2025
SYNOPSIS
High pressure will remain the primary feature through the weekend and into early next week. A front could spread across our region by the middle of next week.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Tonight: High pressure will remain across the Southeast United States, leading to dry and rather quiet conditions for the rest of the night. Temps remain on track and are expected to dip into the upper 40s inland and upper 50s/lower 60s along coastal areas. Latest guidance suggests some hints of patchy fog attempting to develop across Southeast Georgia away from the coast, as a light/calm wind under clear skies favors radiational cooling and coincides with sfc dewpts around 50 during the coolest part of the night.
Patchy fog has been introduced away from the coast across Southeast Georgia as a result to latest trends, but widespread fog is not expected.
SHORT TERM /6 AM THIS MORNING THROUGH SUNDAY/
The mid-levels will consist of a ridge building over the Southeast U.S. Friday into Saturday, causing heights to rise.
This ridge is expected to prevail into Sunday. At the surface, High pressure will prevail in the Atlantic. The periphery of the High will bring our area dry conditions. Expect some fair weather cumulus Friday and Saturday afternoon, followed by increasing high clouds on Sunday. The combination of low-level thickness values and 850 mb temperatures will yield above normal high temperatures. They should range from the lower to middle 80s on Friday and the middle to upper 80s on Saturday and Sunday. Though, temperatures will be cooler at/near the beaches all three days due to a sea breeze. Low temperatures will range from the middle 50s far inland to the lower to middle 60s at/near the beaches Friday and Saturday night.
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
Surface High pressure will prevail through early next week.
It'll bring dry conditions with above normal temperatures. A front should approach on Tuesday, possibly stalling across our area Wednesday and Thursday. This will bring diurnally-driven showers and thunderstorms, enhanced by the afternoon sea breeze.
AVIATION /06Z FRIDAY THROUGH TUESDAY/
VFR conditions will prevail at KCHS/KJZI/KSAV terminals through 06Z Saturday. However, deep mixing and the passage of a sea breeze circulation will favor gusty southeast winds up to 20-25 kt at times Friday afternoon.
Extended Aviation Outlook: VFR.
MARINE
Tonight: Very quiet conditions will continue across the local waters as high pressure strengthens and holds across the western Atlantic.
Winds will be southeasterly at no more than 10-15 kt. Seas will range between 1-2 ft.
Extended Marine: High pressure will prevail in the Atlantic through the weekend and into early next week. This will yield SW surface winds. Expect higher winds near the coast and across Charleston Harbor with the afternoon sea breeze. A front may approach our area on Tuesday, but significant winds are not forecasted with it. Seas should average 2-3 ft within 20 nm and 3-4 ft for the GA waters beyond 20 nm. No marine headlines are expected.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...None.
Area Forecast Discussion National Weather Service Charleston SC 228 AM EDT Fri Apr 18 2025
SYNOPSIS
High pressure will remain the primary feature through the weekend and into early next week. A front could spread across our region by the middle of next week.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Tonight: High pressure will remain across the Southeast United States, leading to dry and rather quiet conditions for the rest of the night. Temps remain on track and are expected to dip into the upper 40s inland and upper 50s/lower 60s along coastal areas. Latest guidance suggests some hints of patchy fog attempting to develop across Southeast Georgia away from the coast, as a light/calm wind under clear skies favors radiational cooling and coincides with sfc dewpts around 50 during the coolest part of the night.
Patchy fog has been introduced away from the coast across Southeast Georgia as a result to latest trends, but widespread fog is not expected.
SHORT TERM /6 AM THIS MORNING THROUGH SUNDAY/
The mid-levels will consist of a ridge building over the Southeast U.S. Friday into Saturday, causing heights to rise.
This ridge is expected to prevail into Sunday. At the surface, High pressure will prevail in the Atlantic. The periphery of the High will bring our area dry conditions. Expect some fair weather cumulus Friday and Saturday afternoon, followed by increasing high clouds on Sunday. The combination of low-level thickness values and 850 mb temperatures will yield above normal high temperatures. They should range from the lower to middle 80s on Friday and the middle to upper 80s on Saturday and Sunday. Though, temperatures will be cooler at/near the beaches all three days due to a sea breeze. Low temperatures will range from the middle 50s far inland to the lower to middle 60s at/near the beaches Friday and Saturday night.
LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
Surface High pressure will prevail through early next week.
It'll bring dry conditions with above normal temperatures. A front should approach on Tuesday, possibly stalling across our area Wednesday and Thursday. This will bring diurnally-driven showers and thunderstorms, enhanced by the afternoon sea breeze.
AVIATION /06Z FRIDAY THROUGH TUESDAY/
VFR conditions will prevail at KCHS/KJZI/KSAV terminals through 06Z Saturday. However, deep mixing and the passage of a sea breeze circulation will favor gusty southeast winds up to 20-25 kt at times Friday afternoon.
Extended Aviation Outlook: VFR.
MARINE
Tonight: Very quiet conditions will continue across the local waters as high pressure strengthens and holds across the western Atlantic.
Winds will be southeasterly at no more than 10-15 kt. Seas will range between 1-2 ft.
Extended Marine: High pressure will prevail in the Atlantic through the weekend and into early next week. This will yield SW surface winds. Expect higher winds near the coast and across Charleston Harbor with the afternoon sea breeze. A front may approach our area on Tuesday, but significant winds are not forecasted with it. Seas should average 2-3 ft within 20 nm and 3-4 ft for the GA waters beyond 20 nm. No marine headlines are expected.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
FPKG1 - 8670870 - Fort Pulaski, GA | 15 mi | 43 min | SSE 4.1G | 66°F | 68°F | 30.20 | ||
41033 | 20 mi | 53 min | SSE 9.7G | 68°F | 30.20 | |||
41067 | 20 mi | 66 min | 68°F | 1 ft | ||||
ACXS1 - ACE Basin Reserve, SC | 29 mi | 76 min | 0 | 63°F | 30.21 | 59°F |
Wind History for Fort Pulaski, GA
toggle option: (graph/table)
Airport Reports
Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
KHXD HILTON HEAD,SC | 4 sm | 6 min | var 03 | 10 sm | Clear | 66°F | 59°F | 78% | 30.21 | |
KARW BEAUFORT COUNTY,SC | 15 sm | 6 min | S 03 | 10 sm | Clear | 63°F | 59°F | 88% | 30.19 | |
KNBC BEAUFORT MCAS /MERRITT FIELD/,SC | 18 sm | 5 min | S 03 | 10 sm | Clear | 64°F | 59°F | 83% | 30.20 | |
KSAV SAVANNAH/HILTON HEAD INTL,GA | 24 sm | 8 min | calm | 10 sm | Clear | 57°F | 55°F | 94% | 30.20 |
Link to 1 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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