Marine Weather and Tide Forecast for Barnwell, SC
![]() | Sunrise 6:15 AM Sunset 8:40 PM Moonrise 11:45 PM Moonset 10:11 AM |
AMZ330 Charleston Harbor- 219 Am Edt Mon Jun 16 2025
Today - SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt this afternoon. A slight chance of showers and tstms this afternoon.
Tonight - SW winds 10 to 15 kt. A chance of showers and tstms in the evening.
Tue - SW winds 10 to 15 kt. A slight chance of showers and tstms in the afternoon.
Tue night - SW winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms in the evening.
Wed - SW winds 10 to 15 kt. A slight chance of showers and tstms in the afternoon.
Wed night - SW winds 10 to 15 kt. A slight chance of showers and tstms in the evening.
Thu - SW winds 10 to 15 kt. A slight chance of showers and tstms.
Thu night - SW winds 10 to 15 kt. A slight chance of showers and tstms.
Fri - SW winds 5 to 10 kt. A chance of showers and tstms.
Fri night - SW winds 5 to 10 kt. A slight chance of showers and tstms.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 81 degrees.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 81 degrees.
AMZ300 219 Am Edt Mon Jun 16 2025
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - Atlantic high pressure will continue to build across the southeast through the week. A cold front could move through Friday.
7 Day Forecast for Marine Location Near Barnwell, SC

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Cuckolds Creek Click for Map Sun -- 03:54 AM EDT 3.72 feet High Tide Sun -- 06:14 AM EDT Sunrise Sun -- 09:58 AM EDT 0.60 feet Low Tide Sun -- 10:05 AM EDT Moonset Sun -- 04:20 PM EDT 3.15 feet High Tide Sun -- 08:32 PM EDT Sunset Sun -- 09:55 PM EDT 0.97 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |   |
Cuckolds Creek, Combahee River, South Carolina, Tide feet
12 am |
2.1 |
1 am |
2.8 |
2 am |
3.3 |
3 am |
3.6 |
4 am |
3.7 |
5 am |
3.5 |
6 am |
3 |
7 am |
2.3 |
8 am |
1.5 |
9 am |
0.9 |
10 am |
0.6 |
11 am |
0.8 |
12 pm |
1.3 |
1 pm |
2 |
2 pm |
2.5 |
3 pm |
2.9 |
4 pm |
3.1 |
5 pm |
3.1 |
6 pm |
2.8 |
7 pm |
2.2 |
8 pm |
1.6 |
9 pm |
1.1 |
10 pm |
1 |
11 pm |
1.2 |
Tulifiny River Click for Map Sun -- 02:33 AM EDT 5.33 feet High Tide Sun -- 06:15 AM EDT Sunrise Sun -- 09:17 AM EDT 0.25 feet Low Tide Sun -- 10:06 AM EDT Moonset Sun -- 02:59 PM EDT 4.51 feet High Tide Sun -- 08:32 PM EDT Sunset Sun -- 09:14 PM EDT 0.41 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |   |
Tulifiny River, I-95 bridge, South Carolina, Tide feet
12 am |
3.8 |
1 am |
4.7 |
2 am |
5.3 |
3 am |
5.3 |
4 am |
4.9 |
5 am |
4.1 |
6 am |
3 |
7 am |
1.9 |
8 am |
0.8 |
9 am |
0.3 |
10 am |
0.5 |
11 am |
1.3 |
12 pm |
2.5 |
1 pm |
3.6 |
2 pm |
4.3 |
3 pm |
4.5 |
4 pm |
4.3 |
5 pm |
3.7 |
6 pm |
2.8 |
7 pm |
1.8 |
8 pm |
0.9 |
9 pm |
0.4 |
10 pm |
0.6 |
11 pm |
1.5 |
Area Discussion for Columbia, SC
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FXUS62 KCAE 160103 AFDCAE
Area Forecast Discussion National Weather Service Columbia SC 903 PM EDT Sun Jun 15 2025
SYNOPSIS
Warm and humid this afternoon with isolated to scattered showers and thunderstorms. Ridging will build into the Southeast US this week leading to warming temperatures and a more typical summertime pattern. Heat Index values may exceed 100 degrees later this week.
NEAR TERM /UNTIL 8 AM MONDAY MORNING/
Key Message(s):
- Warm and humid conditions continue overnight with a few showers around.
Not much change in the overall pattern with high PWAT's, modest instability, but very limited forcing. A weak shortwave pushed across NC and VA earlier this evening, and based on water vapor imagery, seems to have driven some subsidence across our area.
So, not really expecting much in the way precip overnight with good agreement in the hi-res models. Some overnight and early morning fog-stratus is possible but mid-level clouds will likely mitigate it for the most part.
SHORT TERM /8 AM MONDAY MORNING THROUGH WEDNESDAY/
A deep layered ridge will expand from the western Atlantic into the Southeast United States early next week, bringing a pretty typical summertime pattern to the area. High temps will increase a degree or two each day with values in the low to mid 90s.
Dewpoints solidly in the 70s will combine to produce 100-105F heat indices each day. Increasing mid-level subsidence should limit diurnal convective coverage, though with 1500-2000 J/kg CAPEs each day, isolated to scattered coverage expected.
LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
A deep layered ridge will expand from the western Atlantic into the Southeast United States early next week, bringing a pretty typical summertime pattern to the area. High temps will increase a degree or two each day with values in the low to mid 90s. Dewpoints solidly in the 70s will combine to produce 100-105F heat indices each day.
Increasing mid-level subsidence should limit diurnal convective coverage, though with 1500-2000 J/kg CAPEs each day, isolated to scattered coverage expected.
AVIATION /00Z MONDAY THROUGH FRIDAY/
VFR conditions generally expected through the period with possible brief restrictions in predawn stratus at AGS/DNL.
Afternoon convection remains isolated and should not have much impact on terminals although a shower may move over OGB so included a tempo there. Otherwise, southerly winds gradually weaken through the night less than 5 knots. Models are not as aggressive with stratus tonight but there are some suggestions if it happens it would be in the CSRA so have included a tempo there for MVFR cigs 09z-13z. Winds should pick up to around 8 to 10 knots after 15z with VFR cumulus cloud development and scattered afternoon convection.
EXTENDED AVIATION OUTLOOK...Brief restrictions are possible each afternoon/evening with typical summertime convection.
Patchy early morning fog and stratus may also cause some restrictions.
CAE WATCHES/WARNINGS/ADVISORIES
SC...None.
GA...None.
Area Forecast Discussion National Weather Service Columbia SC 903 PM EDT Sun Jun 15 2025
SYNOPSIS
Warm and humid this afternoon with isolated to scattered showers and thunderstorms. Ridging will build into the Southeast US this week leading to warming temperatures and a more typical summertime pattern. Heat Index values may exceed 100 degrees later this week.
NEAR TERM /UNTIL 8 AM MONDAY MORNING/
Key Message(s):
- Warm and humid conditions continue overnight with a few showers around.
Not much change in the overall pattern with high PWAT's, modest instability, but very limited forcing. A weak shortwave pushed across NC and VA earlier this evening, and based on water vapor imagery, seems to have driven some subsidence across our area.
So, not really expecting much in the way precip overnight with good agreement in the hi-res models. Some overnight and early morning fog-stratus is possible but mid-level clouds will likely mitigate it for the most part.
SHORT TERM /8 AM MONDAY MORNING THROUGH WEDNESDAY/
A deep layered ridge will expand from the western Atlantic into the Southeast United States early next week, bringing a pretty typical summertime pattern to the area. High temps will increase a degree or two each day with values in the low to mid 90s.
Dewpoints solidly in the 70s will combine to produce 100-105F heat indices each day. Increasing mid-level subsidence should limit diurnal convective coverage, though with 1500-2000 J/kg CAPEs each day, isolated to scattered coverage expected.
LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
A deep layered ridge will expand from the western Atlantic into the Southeast United States early next week, bringing a pretty typical summertime pattern to the area. High temps will increase a degree or two each day with values in the low to mid 90s. Dewpoints solidly in the 70s will combine to produce 100-105F heat indices each day.
Increasing mid-level subsidence should limit diurnal convective coverage, though with 1500-2000 J/kg CAPEs each day, isolated to scattered coverage expected.
AVIATION /00Z MONDAY THROUGH FRIDAY/
VFR conditions generally expected through the period with possible brief restrictions in predawn stratus at AGS/DNL.
Afternoon convection remains isolated and should not have much impact on terminals although a shower may move over OGB so included a tempo there. Otherwise, southerly winds gradually weaken through the night less than 5 knots. Models are not as aggressive with stratus tonight but there are some suggestions if it happens it would be in the CSRA so have included a tempo there for MVFR cigs 09z-13z. Winds should pick up to around 8 to 10 knots after 15z with VFR cumulus cloud development and scattered afternoon convection.
EXTENDED AVIATION OUTLOOK...Brief restrictions are possible each afternoon/evening with typical summertime convection.
Patchy early morning fog and stratus may also cause some restrictions.
CAE WATCHES/WARNINGS/ADVISORIES
SC...None.
GA...None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
LMFS1 - Lake Murray SC | 61 mi | 72 min | WSW 21G | 78°F |
Wind History for Charleston, SC
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Airport Reports
Link to 1 hour of 5 minute data for KBNL
Terminal Aerodrome Forecast (TAF) for KBNL
Wind History Graph: BNL
(wind in knots)GEOS Local Image of Southeast
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Charleston, SC,

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