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Charleston, SC · South Carolina · united-states

Tide is currently falling — next low in 27m

1.70 m / 5.6ft
Next high · 18:11 GMT-4
Heights relative to MLLW · 2026-04-27Coef. 91Solunar 3/5

Tide times at Charleston, SC on Monday, 27 April 2026: first high tide at 05:33am, first low tide at 11:47am, second high tide at 06:11pm. Sunrise 06:36am, sunset 07:58pm.

TIDE CURVE

Next 24 hours at Charleston, SC

-0.2 m0.9 m1.9 mHeight (MLLW)12:0016:0020:0000:0004:0008:00L 11:47H 18:11L 00:15H 06:21nowTime (America/New_York)

Predictions: NOAA CO-OPS station 8665530 — heights relative to MLLW.

Harmonic prediction from the official tide authority. Very high accuracy under normal conditions; storm surge may shift actual water level. Not for navigation.

TODAY'S HIGHLIGHTS

Sun, moon and conditions on Mon 27 Apr

Sunrise
06:36
Sunset
19:58
Moon
Waxing gibbous
83% illuminated
Coefficient
91
Spring cycle
7-DAY OUTLOOK

Highs and lows next 7 days

Today
1.7m / 5.6ft18:11
0.0m / 0.1ft11:47
Coef. 91
Tue
1.6m / 5.2ft06:21
0.1m / 0.2ft00:15
Coef. 97
Wed
1.6m / 5.1ft07:04
0.0m / 0.1ft01:05
Coef. 100
Thu
1.5m / 5.1ft07:44
0.0m / 0.1ft01:52
Coef. 101
Fri
1.5m / 5.0ft08:22
0.0m / 0.1ft02:35
Coef. 99
Sat
1.5m / 4.8ft09:01
0.0m / 0.1ft03:16
Coef. 96
Sun
1.4m / 4.7ft09:39
0.1m / 0.2ft03:55
Coef. 92
All extrema (7 days)
DayTypeTimeHeightCoef.
Mon 27 AprLow11:470.0m / 0.1ft91
High18:111.7m / 5.6ft
Tue 28 AprLow00:150.1m / 0.2ft97
High06:211.6m / 5.2ft
Low12:320.0m / 0.0ft
High18:571.8m / 5.8ft
Wed 29 AprLow01:050.0m / 0.1ft100
High07:041.6m / 5.1ft
Low13:13-0.0m / -0.0ft
High19:381.8m / 6.0ft
Thu 30 AprLow01:520.0m / 0.1ft101
High07:441.5m / 5.1ft
Low13:520.0m / 0.0ft
High20:171.8m / 6.0ft
Fri 01 MayLow02:350.0m / 0.1ft99
High08:221.5m / 5.0ft
Low14:290.0m / 0.1ft
High20:541.8m / 6.0ft
Sat 02 MayLow03:160.0m / 0.1ft96
High09:011.5m / 4.8ft
Low15:040.1m / 0.2ft
High21:301.8m / 5.9ft
Sun 03 MayLow03:550.1m / 0.2ft92
High09:391.4m / 4.7ft
Low15:380.1m / 0.4ft
High22:051.8m / 5.7ft

Predictions: NOAA CO-OPS station 8665530 — heights relative to MLLW. · Not for navigation.

SOLUNAR FORECAST

Fishing windows · 7-day rating

The angler tradition that rates each day for fish-bite likelihood using moon transits and rise/set. One to five stars, not a scientific forecast.

SPRING AND NEAP CYCLE

Cycle dates near Charleston, SC

Next spring tide on Tue 28 Apr (range 1.8m / 6.0ft). Next neap on Wed 29 Apr.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

EDITORIAL

About tides at Charleston, SC

Charleston Harbor opens to the Atlantic between Sullivan's Island and Morris Island, with the Cooper and Ashley rivers feeding the inner harbour. Mean tide range is about 1.7 metres — a textbook semidiurnal pattern, two highs and two lows of similar size each day. Spring tides push toward 2.0 metres, neaps drop near 1.4 metres. The Battery, Shem Creek, and the marshes behind Folly Beach all swing through the full range, and the marsh creeks behind the barrier islands run hard on each ebb. For paddlers, anglers fishing the inlets, or families combing Folly's intertidal zone for shells, the timing and size of the low matters. Hurricane season — June through November — can stack water surge of 1–2 metres on top of predicted tides; that's when local emergency-management forecasts override harmonic predictions completely. Predictions on this page come from NOAA CO-OPS station 8665530 in Charleston Harbor.

COMMON QUESTIONS

Tide questions about Charleston, SC

When is the next high tide at Charleston?
The hero block shows the next high tide at Charleston Harbor in local Eastern time. The 7-day table covers all daily extremes. For tropical-storm and hurricane surge potential, the National Hurricane Center and the Charleston NWS office are the authoritative real-time sources.
What's the typical tide range at Charleston?
Mean range is about 1.7 metres at Charleston Harbor — semidiurnal, with two highs and two lows of comparable size. Spring tides push to roughly 2.0 metres, neaps compress to about 1.4 metres. Wind setup from the southeast can lift water levels by 20–30 cm even in fair weather; tropical-storm surge can lift them several metres.
When are the best low tides for shell-hunting on Folly Beach?
The lowest tides cluster around new and full moons. Folly's intertidal zone widens noticeably on the lowest predicted tides — under 0.3 m above MLLW makes the wash zone walkable for an hour or so either side. The 7-day table flags each day's predicted low. Pair with sunrise from the sun/moon block above for first-light combing.
Where do these tide predictions come from?
NOAA CO-OPS station 8665530, Charleston Harbor. The station has a long historical record, and NOAA's harmonic predictions for it are very high accuracy under normal conditions — typically within a few minutes and a few centimetres of measured water level.
Is this safe to use for navigation?
No. Use NOAA's authoritative tide and chart products plus US Coast Guard notices for piloting in Charleston Harbor and the Intracoastal Waterway. Hurricane and tropical-storm surge can completely override predicted levels — emergency-management forecasts take precedence in those events.

30-day tide table — Charleston, SC

Heights relative to MLLW. Predictions: NOAA CO-OPS station 8665530 — heights relative to MLLW.

DayTypeTimeHeight
Mon 27 AprHigh05:331.6m / 5.3ft
Low11:470.0m / 0.1ft
High18:111.7m / 5.6ft
Tue 28 AprLow00:150.1m / 0.2ft
High06:211.6m / 5.2ft
Low12:320.0m / 0.0ft
High18:571.8m / 5.8ft
Wed 29 AprLow01:050.0m / 0.1ft
High07:041.6m / 5.1ft
Low13:13-0.0m / -0.0ft
High19:381.8m / 6.0ft
Thu 30 AprLow01:520.0m / 0.1ft
High07:441.5m / 5.1ft
Low13:520.0m / 0.0ft
High20:171.8m / 6.0ft
Fri 01 MayLow02:350.0m / 0.1ft
High08:221.5m / 5.0ft
Low14:290.0m / 0.1ft
High20:541.8m / 6.0ft
Sat 02 MayLow03:160.0m / 0.1ft
High09:011.5m / 4.8ft
Low15:040.1m / 0.2ft
High21:301.8m / 5.9ft
Sun 03 MayLow03:550.1m / 0.2ft
High09:391.4m / 4.7ft
Low15:380.1m / 0.4ft
High22:051.8m / 5.7ft
Mon 04 MayLow04:330.1m / 0.4ft
High10:171.4m / 4.6ft
Low16:120.2m / 0.5ft
High22:411.7m / 5.6ft
Tue 05 MayLow05:100.2m / 0.6ft
High10:561.3m / 4.4ft
Low16:480.2m / 0.7ft
High23:171.6m / 5.4ft
Wed 06 MayLow05:480.2m / 0.8ft
High11:351.3m / 4.3ft
Low17:260.2m / 0.8ft
High23:561.6m / 5.2ft
Thu 07 MayLow06:290.3m / 0.9ft
High12:191.3m / 4.2ft
Low18:110.3m / 0.9ft
Fri 08 MayHigh00:411.5m / 5.1ft
Low07:160.3m / 1.0ft
High13:081.3m / 4.3ft
Low19:040.3m / 1.0ft
Sat 09 MayHigh01:311.5m / 5.0ft
Low08:060.3m / 0.9ft
High14:021.3m / 4.4ft
Low20:050.3m / 1.1ft
Sun 10 MayHigh02:251.5m / 4.9ft
Low08:570.2m / 0.8ft
High14:581.4m / 4.6ft
Low21:100.3m / 1.0ft
Mon 11 MayHigh03:211.5m / 4.9ft
Low09:490.2m / 0.6ft
High15:561.5m / 4.9ft
Low22:150.2m / 0.8ft
Tue 12 MayHigh04:191.5m / 4.9ft
Low10:410.1m / 0.3ft
High16:541.6m / 5.3ft
Low23:180.2m / 0.6ft
Wed 13 MayHigh05:171.5m / 5.0ft
Low11:33-0.0m / -0.1ft
High17:501.8m / 5.8ft
Thu 14 MayLow00:180.1m / 0.2ft
High06:131.5m / 5.1ft
Low12:24-0.1m / -0.3ft
High18:431.9m / 6.2ft
Fri 15 MayLow01:15-0.0m / -0.0ft
High07:061.6m / 5.1ft
Low13:15-0.2m / -0.6ft
High19:352.0m / 6.6ft
Sat 16 MayLow02:10-0.1m / -0.3ft
High08:001.6m / 5.2ft
Low14:07-0.2m / -0.7ft
High20:272.1m / 6.7ft
Sun 17 MayLow03:04-0.1m / -0.4ft
High08:551.6m / 5.1ft
Low14:59-0.2m / -0.8ft
High21:222.1m / 6.7ft
Mon 18 MayLow03:58-0.1m / -0.4ft
High09:521.5m / 5.1ft
Low15:53-0.2m / -0.7ft
High22:192.0m / 6.6ft
Tue 19 MayLow04:51-0.1m / -0.4ft
High10:521.5m / 5.0ft
Low16:47-0.2m / -0.5ft
High23:172.0m / 6.4ft
Wed 20 MayLow05:45-0.1m / -0.2ft
High11:531.5m / 4.9ft
Low17:44-0.1m / -0.2ft
Thu 21 MayHigh00:171.9m / 6.1ft
Low06:42-0.0m / -0.0ft
High12:561.5m / 4.9ft
Low18:460.0m / 0.1ft
Fri 22 MayHigh01:171.8m / 5.8ft
Low07:410.0m / 0.1ft
High13:591.5m / 5.0ft
Low19:510.1m / 0.3ft
Sat 23 MayHigh02:151.7m / 5.5ft
Low08:380.0m / 0.2ft
High14:591.6m / 5.1ft
Low20:560.1m / 0.4ft
Sun 24 MayHigh03:101.6m / 5.3ft
Low09:320.0m / 0.2ft
High15:571.6m / 5.2ft
Low21:580.2m / 0.5ft
Mon 25 MayHigh04:031.5m / 5.1ft
Low10:230.0m / 0.1ft
High16:511.7m / 5.4ft
Low22:570.2m / 0.5ft
Tue 26 MayHigh04:541.5m / 4.9ft
Low11:100.0m / 0.1ft
High17:421.7m / 5.6ft
Low23:510.1m / 0.4ft

Not for navigation. Generated 2026-04-27T15:20:29.216Z.

Predictions: NOAA CO-OPS station 8665530 — heights relative to MLLW.
MethodologyGlossary

Not for navigation. Page generated 2026-04-27T15:20:29.216Z. Predictions refresh daily.