Marine Weather and Tide Forecast for Kiawah Island, SC
 | Sunrise 7:32 AM Sunset 7:26 PM Moonrise 3:17 AM Moonset 1:07 PM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
AMZ330 Charleston Harbor- 438 Am Edt Fri Mar 13 2026
Today - NE winds 10 kt, becoming E 5 to 10 kt later this morning, then se this afternoon.
Tonight - Variable winds 5 kt.
Sat - NW winds 5 kt, becoming E in the afternoon.
Sat night - E winds 5 kt. A slight chance of showers after midnight.
Sun - E winds 5 to 10 kt. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon.
Sun night - SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt after midnight. Showers likely. A slight chance of tstms in the evening, then a chance of tstms after midnight.
Mon - S winds 15 to 20 kt. Waves 1 to 2 ft. Showers with a chance of tstms.
Mon night - W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms.
Tue - NW winds 10 to 15 kt.
Tue night - N winds 5 to 10 kt.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 61 degrees.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 61 degrees.
AMZ300 438 Am Edt Fri Mar 13 2026
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - High pressure will prevail through the weekend. A strong cold front will push offshore Monday.
7 Day Forecast for Marine Location Near Kiawah Island, SC
NEW! Add second zone forecast
| Kiawah River Bridge Click for Map Fri -- 04:16 AM EDT Moonrise Fri -- 04:27 AM EDT 5.07 feet High Tide Fri -- 07:33 AM EDT Sunrise Fri -- 10:41 AM EDT 1.03 feet Low Tide Fri -- 02:06 PM EDT Moonset Fri -- 04:38 PM EDT 4.35 feet High Tide Fri -- 07:27 PM EDT Sunset Fri -- 10:47 PM EDT 0.77 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Kiawah River Bridge, South Carolina, Tide feet
| 12 am |
| 2.1 |
| 1 am |
| 3.1 |
| 2 am |
| 4 |
| 3 am |
| 4.7 |
| 4 am |
| 5 |
| 5 am |
| 5 |
| 6 am |
| 4.5 |
| 7 am |
| 3.7 |
| 8 am |
| 2.7 |
| 9 am |
| 1.8 |
| 10 am |
| 1.2 |
| 11 am |
| 1.1 |
| 12 pm |
| 1.5 |
| 1 pm |
| 2.3 |
| 2 pm |
| 3.2 |
| 3 pm |
| 3.9 |
| 4 pm |
| 4.3 |
| 5 pm |
| 4.3 |
| 6 pm |
| 3.9 |
| 7 pm |
| 3.2 |
| 8 pm |
| 2.3 |
| 9 pm |
| 1.5 |
| 10 pm |
| 0.9 |
| 11 pm |
| 0.8 |
Tide / Current for Deveaux Banks, off North Edisto River entrance (depth 12 ft), South Carolina Current
| Deveaux Banks Click for Map Flood direction 306 true Ebb direction 126 true Fri -- 12:51 AM EDT 0.81 knots Max Flood Fri -- 04:16 AM EDT Moonrise Fri -- 04:37 AM EDT -0.00 knots Slack Fri -- 07:33 AM EDT Sunrise Fri -- 07:42 AM EDT -1.56 knots Max Ebb Fri -- 11:01 AM EDT 0.00 knots Slack Fri -- 01:15 PM EDT 0.80 knots Max Flood Fri -- 02:07 PM EDT Moonset Fri -- 04:26 PM EDT -0.00 knots Slack Fri -- 07:27 PM EDT Sunset Fri -- 07:42 PM EDT -1.24 knots Max Ebb Fri -- 11:10 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Deveaux Banks, off North Edisto River entrance (depth 12 ft), South Carolina Current, knots
| 12 am |
| 0.7 |
| 1 am |
| 0.8 |
| 2 am |
| 0.7 |
| 3 am |
| 0.5 |
| 4 am |
| 0.3 |
| 5 am |
| -0.3 |
| 6 am |
| -0.9 |
| 7 am |
| -1.4 |
| 8 am |
| -1.5 |
| 9 am |
| -1.2 |
| 10 am |
| -0.7 |
| 11 am |
| -0 |
| 12 pm |
| 0.5 |
| 1 pm |
| 0.8 |
| 2 pm |
| 0.7 |
| 3 pm |
| 0.4 |
| 4 pm |
| 0.2 |
| 5 pm |
| -0.3 |
| 6 pm |
| -0.9 |
| 7 pm |
| -1.2 |
| 8 pm |
| -1.2 |
| 9 pm |
| -1 |
| 10 pm |
| -0.6 |
| 11 pm |
| -0.1 |
FXUS62 KCHS 130844 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 444 AM EDT Fri Mar 13 2026
WHAT HAS CHANGED
The Marine and Aviation sections were updated.
KEY MESSAGES
- 1) A strong cold front will bring rain, gusty winds, and the possibility of severe thunderstorms on Monday.
- 2) Frost/freeze is possible Monday night and Tuesday night.
DISCUSSION
KEY MESSAGE 1: A strong cold front will bring rain, gusty winds, and the possibility of severe thunderstorms on Monday.
A strong upper trough will move toward the Appalachians Sunday night and Monday. A warm front will lift north Sunday afternoon and evening, potentially bringing some showers to the area. A strong cold front then sweeps through the area Monday afternoon and evening, bringing a fairly widespread band of showers and thunderstorms. Total QPF currently looks to be around half an inch on average. Models show the potential for at least marginal instability which combined with strong low-level wind fields could result in some strong to severe thunderstorms.
KEY MESSAGE 2: Frost/freeze is possible Monday night and Tuesday night.
Following the passage of the cold front Monday evening, drastically cooler temperatures are expected through the middle of next week. Monday night and Tuesday night could see freezing temperatures across the interior portions of SC and GA. Winds will be too strong for frost Monday night, but Tuesday night we could see winds relax enough to allow for some frost formation, potentially closer to the coast where lows are just above freezing.
AVIATION /12Z FRIDAY THROUGH TUESDAY/
13/12z TAF Discussion: KCHS/KJZI/KSAV: VFR through 14/12z.
Extended Aviation Outlook: Brief flight restrictions are possible in showers and thunderstorms Sunday through Monday evening. Gusty winds expected on Monday.
MARINE
Through Tonight: Conditions across the coastal waters will steadily improve today as cold air advection wanes and the pressure gradient relaxes. The Gale Warning for the Georgia offshore waters expired at 5 PM with a Small Craft Advisory now in effect until 3 PM. Advisories for all other nearshore legs are on track to expire at 9 AM.
Saturday through Wednesday: Strong southerly winds will develop Sunday night into Monday ahead of a strong cold front. Solid Small Craft Advisory conditions anticipated, along with the potential for Gales across the Charleston nearshore waters due to 35 kt gusts Monday afternoon/evening.
EQUIPMENT
The KCLX radar is scheduled for radome panel replacement March 16-19, 2026. The radar will be down during this time. Users are encouraged to use data from the following nearby radar sites during the maintenance outage:
KCAE - Columbia, SC KLTX - Wilmington, NC KJAX - Jacksonville, FL KVAX - Moody AFB, GA KJGX - Robbins AFB, GA
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...Small Craft Advisory until 9 AM EDT this morning for AMZ350- 352-354.
Gale Warning until 5 AM EDT early this morning for AMZ374.
Small Craft Advisory until 3 PM EDT this afternoon for AMZ374.
Area Forecast Discussion National Weather Service Charleston SC 444 AM EDT Fri Mar 13 2026
WHAT HAS CHANGED
The Marine and Aviation sections were updated.
KEY MESSAGES
- 1) A strong cold front will bring rain, gusty winds, and the possibility of severe thunderstorms on Monday.
- 2) Frost/freeze is possible Monday night and Tuesday night.
DISCUSSION
KEY MESSAGE 1: A strong cold front will bring rain, gusty winds, and the possibility of severe thunderstorms on Monday.
A strong upper trough will move toward the Appalachians Sunday night and Monday. A warm front will lift north Sunday afternoon and evening, potentially bringing some showers to the area. A strong cold front then sweeps through the area Monday afternoon and evening, bringing a fairly widespread band of showers and thunderstorms. Total QPF currently looks to be around half an inch on average. Models show the potential for at least marginal instability which combined with strong low-level wind fields could result in some strong to severe thunderstorms.
KEY MESSAGE 2: Frost/freeze is possible Monday night and Tuesday night.
Following the passage of the cold front Monday evening, drastically cooler temperatures are expected through the middle of next week. Monday night and Tuesday night could see freezing temperatures across the interior portions of SC and GA. Winds will be too strong for frost Monday night, but Tuesday night we could see winds relax enough to allow for some frost formation, potentially closer to the coast where lows are just above freezing.
AVIATION /12Z FRIDAY THROUGH TUESDAY/
13/12z TAF Discussion: KCHS/KJZI/KSAV: VFR through 14/12z.
Extended Aviation Outlook: Brief flight restrictions are possible in showers and thunderstorms Sunday through Monday evening. Gusty winds expected on Monday.
MARINE
Through Tonight: Conditions across the coastal waters will steadily improve today as cold air advection wanes and the pressure gradient relaxes. The Gale Warning for the Georgia offshore waters expired at 5 PM with a Small Craft Advisory now in effect until 3 PM. Advisories for all other nearshore legs are on track to expire at 9 AM.
Saturday through Wednesday: Strong southerly winds will develop Sunday night into Monday ahead of a strong cold front. Solid Small Craft Advisory conditions anticipated, along with the potential for Gales across the Charleston nearshore waters due to 35 kt gusts Monday afternoon/evening.
EQUIPMENT
The KCLX radar is scheduled for radome panel replacement March 16-19, 2026. The radar will be down during this time. Users are encouraged to use data from the following nearby radar sites during the maintenance outage:
KCAE - Columbia, SC KLTX - Wilmington, NC KJAX - Jacksonville, FL KVAX - Moody AFB, GA KJGX - Robbins AFB, GA
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...Small Craft Advisory until 9 AM EDT this morning for AMZ350- 352-354.
Gale Warning until 5 AM EDT early this morning for AMZ374.
Small Craft Advisory until 3 PM EDT this afternoon for AMZ374.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| CHTS1 | 16 mi | 55 min | NE 9.9G | 46°F | 61°F | 30.23 | ||
| ACXS1 - ACE Basin Reserve, SC | 18 mi | 118 min | 0 | 42°F | 30.21 | 39°F | ||
| 41066 | 24 mi | 63 min | 61°F | |||||
| 41076 | 24 mi | 63 min | 61°F | 6 ft | ||||
| 41033 | 27 mi | 95 min | ENE 19G | 53°F | 59°F | 30.19 | 39°F | |
| 41067 | 27 mi | 53 min | 58°F | 4 ft | ||||
| 41029 - Capers Nearshore (CAP 2) | 30 mi | 95 min | ENE 18G | 51°F | 57°F | 30.20 | 40°F | |
| 41065 | 30 mi | 73 min | 56°F | 3 ft |
Wind History for Charleston, SC
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KJZI
Terminal Aerodrome Forecast (TAF) for KJZI
Wind History Graph: JZI
(wind in knots)
GEOS Local Image of southeast
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Charleston, SC,
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