Tue Sep 8 at Folly Beach: high tide at 6:30 AM (5.5 ft) and 7:01 PM (6.6 ft); low tide at 12:04 AM (0.6 ft) and 12:09 PM (0.1 ft) — measured for NOAA's in-town Folly Beach station #8666652.
| Day | Time | Tide | Height |
|---|---|---|---|
| Tue Sep 8 | 12:04 AM | Low | 0.6 ft (0.19 m) |
| 6:30 AM | High | 5.5 ft (1.68 m) | |
| 12:09 PM | Low | 0.1 ft (0.03 m) | |
| 7:01 PM | High | 6.6 ft (2.00 m) | |
| Wed Sep 9 | 12:57 AM | Low | 0.4 ft (0.12 m) |
| 7:27 AM | High | 5.8 ft (1.78 m) | |
| 1:06 PM | Low | -0.0 ft (-0.01 m) | |
| 7:52 PM | High | 6.6 ft (2.02 m) | |
| Thu Sep 10 | 1:46 AM | Low | 0.2 ft (0.06 m) |
| 8:19 AM | High | 6.1 ft (1.87 m) | |
| 2:00 PM | Low | -0.1 ft (-0.02 m) | |
| 8:39 PM | High | 6.6 ft (2.00 m) | |
| Fri Sep 11 | 2:31 AM | Low | 0.1 ft (0.03 m) |
| 9:08 AM | High | 6.3 ft (1.92 m) | |
| 2:51 PM | Low | -0.0 ft (0.00 m) | |
| 9:23 PM | High | 6.4 ft (1.95 m) | |
| Sat Sep 12 | 3:15 AM | Low | 0.1 ft (0.03 m) |
| 9:55 AM | High | 6.4 ft (1.94 m) | |
| 3:39 PM | Low | 0.2 ft (0.05 m) | |
| 10:05 PM | High | 6.1 ft (1.87 m) | |
| Sun Sep 13 | 3:55 AM | Low | 0.2 ft (0.06 m) |
| 10:40 AM | High | 6.3 ft (1.93 m) | |
| 4:25 PM | Low | 0.4 ft (0.12 m) | |
| 10:46 PM | High | 5.9 ft (1.78 m) | |
| Mon Sep 14 | 4:34 AM | Low | 0.4 ft (0.12 m) |
| 11:24 AM | High | 6.2 ft (1.90 m) | |
| 5:10 PM | Low | 0.7 ft (0.21 m) | |
| 11:27 PM | High | 5.5 ft (1.69 m) | |
| Tue Sep 15 | 5:12 AM | Low | 0.6 ft (0.19 m) |
| 12:07 PM | High | 6.0 ft (1.84 m) | |
| 5:56 PM | Low | 1.0 ft (0.31 m) | |
| Wed Sep 16 | 12:10 AM | High | 5.3 ft (1.60 m) |
| 5:50 AM | Low | 0.9 ft (0.27 m) | |
| 12:52 PM | High | 5.8 ft (1.78 m) | |
| 6:44 PM | Low | 1.3 ft (0.40 m) |
Folly Beach is semidiurnal — paired highs (5.5 and 6.6 ft today) and paired lows of similar size. An average swing here this week moves 5.7 ft of water. A 6.6 ft swing — Folly Beach's biggest this table — runs from the 1:06 PM low on Wed Sep 9 into the next high. Folly Beach tops out at 6.6 ft (Wed Sep 9 7:52 PM) and bottoms at -0.1 ft (Thu Sep 10 2:00 PM).
Folly Beach mid-swing times below mark predicted peak flow on its 5.7 ft average cycle (why moving water matters):
Sea surface temperature 13 km away at Charleston Offshore SC is currently 29.5 °C (85.1 °F), 5.2 °C above the seasonal normal, from satellite and ocean-model data refreshed daily.
Folly Beach numbers: NOAA CO-OPS #8666652 (Folly River Bridge, Folly Island), 0.8 km off Folly Beach center; this open-water pick beat 22 closer-in candidates. Onshore wind or a storm can push real water at Folly Beach above the 6.6 ft predicted peak; offshore wind can hold it under. All Folly Beach times station-local, refreshed 2026-09-08.
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