Mon Sep 14 at Charleston: high tide at 11:03 AM (6.2 ft) and 11:06 PM (5.5 ft); low tide at 4:37 AM (0.4 ft) and 5:13 PM (0.7 ft) — from NOAA station Charleston (customhouse Wharf) #8665530, 1.7 km out.
| Day | Time | Tide | Height |
|---|---|---|---|
| Mon Sep 14 | 4:37 AM | Low | 0.4 ft (0.12 m) |
| 11:03 AM | High | 6.2 ft (1.88 m) | |
| 5:13 PM | Low | 0.7 ft (0.23 m) | |
| 11:06 PM | High | 5.5 ft (1.67 m) | |
| Tue Sep 15 | 5:15 AM | Low | 0.7 ft (0.20 m) |
| 11:46 AM | High | 6.0 ft (1.82 m) | |
| 5:59 PM | Low | 1.1 ft (0.33 m) | |
| 11:49 PM | High | 5.2 ft (1.59 m) | |
| Wed Sep 16 | 5:53 AM | Low | 0.9 ft (0.29 m) |
| 12:31 PM | High | 5.8 ft (1.76 m) | |
| 6:47 PM | Low | 1.4 ft (0.42 m) | |
| Thu Sep 17 | 12:34 AM | High | 5.0 ft (1.52 m) |
| 6:35 AM | Low | 1.2 ft (0.37 m) | |
| 1:19 PM | High | 5.6 ft (1.71 m) | |
| 7:39 PM | Low | 1.6 ft (0.49 m) | |
| Fri Sep 18 | 1:23 AM | High | 4.8 ft (1.46 m) |
| 7:23 AM | Low | 1.4 ft (0.43 m) | |
| 2:11 PM | High | 5.5 ft (1.67 m) | |
| 8:34 PM | Low | 1.8 ft (0.53 m) | |
| Sat Sep 19 | 2:16 AM | High | 4.7 ft (1.44 m) |
| 8:18 AM | Low | 1.5 ft (0.46 m) | |
| 3:05 PM | High | 5.5 ft (1.66 m) | |
| 9:29 PM | Low | 1.8 ft (0.54 m) | |
| Sun Sep 20 | 3:11 AM | High | 4.7 ft (1.43 m) |
| 9:15 AM | Low | 1.5 ft (0.46 m) | |
| 4:00 PM | High | 5.5 ft (1.68 m) | |
| 10:21 PM | Low | 1.7 ft (0.52 m) | |
| Mon Sep 21 | 4:08 AM | High | 4.8 ft (1.46 m) |
| 10:12 AM | Low | 1.4 ft (0.43 m) | |
| 4:54 PM | High | 5.6 ft (1.71 m) | |
| 11:11 PM | Low | 1.5 ft (0.46 m) | |
| Tue Sep 22 | 5:03 AM | High | 5.0 ft (1.52 m) |
| 11:07 AM | Low | 1.2 ft (0.38 m) | |
| 5:44 PM | High | 5.8 ft (1.76 m) | |
| 11:56 PM | Low | 1.3 ft (0.39 m) |
Charleston is semidiurnal — paired highs (6.2 and 5.5 ft today) and paired lows of similar size. An average swing here this week moves 4.0 ft of water. A 5.8 ft swing — Charleston's biggest this table — runs from the 4:37 AM low on Mon Sep 14 into the next high. Charleston tops out at 6.2 ft (Mon Sep 14 11:03 AM) and bottoms at 0.4 ft (Mon Sep 14 4:37 AM).
Charleston mid-swing times below mark predicted peak flow on its 4.0 ft average cycle (why moving water matters):
Sea surface temperature at Charleston is currently 24.3 °C (75.8 °F), 0.0 °C below the seasonal normal, from satellite and ocean-model data refreshed daily.
Charleston numbers: NOAA CO-OPS #8665530 (Charleston (customhouse Wharf)), 1.7 km off Charleston center; this open-water pick beat 38 closer-in candidates. Onshore wind or a storm can push real water at Charleston above the 6.2 ft predicted peak; offshore wind can hold it under. All Charleston times station-local, refreshed 2026-09-14.
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