Tue Sep 8 at Naples: high tide at 10:47 AM (3.5 ft); low tide at 4:34 AM (1.7 ft) and 5:24 PM (0.2 ft) — from NOAA station Naples (outer Coast) #8725110, 1.8 km out.
| Day | Time | Tide | Height |
|---|---|---|---|
| Tue Sep 8 | 4:34 AM | Low | 1.7 ft (0.51 m) |
| 10:47 AM | High | 3.5 ft (1.07 m) | |
| 5:24 PM | Low | 0.2 ft (0.05 m) | |
| Wed Sep 9 | 12:07 AM | High | 2.7 ft (0.83 m) |
| 5:25 AM | Low | 1.3 ft (0.41 m) | |
| 11:40 AM | High | 3.6 ft (1.10 m) | |
| 6:08 PM | Low | 0.3 ft (0.09 m) | |
| Thu Sep 10 | 12:27 AM | High | 2.9 ft (0.87 m) |
| 6:11 AM | Low | 1.0 ft (0.31 m) | |
| 12:26 PM | High | 3.6 ft (1.10 m) | |
| 6:48 PM | Low | 0.5 ft (0.15 m) | |
| Fri Sep 11 | 12:50 AM | High | 3.0 ft (0.92 m) |
| 6:55 AM | Low | 0.7 ft (0.23 m) | |
| 1:09 PM | High | 3.5 ft (1.07 m) | |
| 7:26 PM | Low | 0.7 ft (0.22 m) | |
| Sat Sep 12 | 1:14 AM | High | 3.1 ft (0.95 m) |
| 7:38 AM | Low | 0.5 ft (0.17 m) | |
| 1:53 PM | High | 3.3 ft (1.01 m) | |
| 8:02 PM | Low | 1.0 ft (0.30 m) | |
| Sun Sep 13 | 1:40 AM | High | 3.2 ft (0.97 m) |
| 8:21 AM | Low | 0.4 ft (0.14 m) | |
| 2:38 PM | High | 3.1 ft (0.94 m) | |
| 8:37 PM | Low | 1.2 ft (0.38 m) | |
| Mon Sep 14 | 2:08 AM | High | 3.2 ft (0.97 m) |
| 9:04 AM | Low | 0.4 ft (0.13 m) | |
| 3:25 PM | High | 2.8 ft (0.87 m) | |
| 9:10 PM | Low | 1.5 ft (0.46 m) | |
| Tue Sep 15 | 2:38 AM | High | 3.1 ft (0.95 m) |
| 9:49 AM | Low | 0.5 ft (0.15 m) | |
| 4:16 PM | High | 2.6 ft (0.79 m) | |
| 9:40 PM | Low | 1.7 ft (0.53 m) | |
| Wed Sep 16 | 3:11 AM | High | 3.0 ft (0.92 m) |
| 10:39 AM | Low | 0.6 ft (0.19 m) | |
| 5:18 PM | High | 2.4 ft (0.73 m) | |
| 9:59 PM | Low | 1.9 ft (0.59 m) |
Naples is semidiurnal — paired highs (3.5 ft today) and paired lows of similar size. An average swing here this week moves 2.2 ft of water. A 3.3 ft swing — Naples's biggest this table — runs from the 10:47 AM high on Tue Sep 8 into the next low. Naples tops out at 3.6 ft (Wed Sep 9 11:40 AM) and bottoms at 0.2 ft (Tue Sep 8 5:24 PM).
Naples mid-swing times below mark predicted peak flow on its 2.2 ft average cycle (why moving water matters):
Sea surface temperature 23 km away at Marco Island Florida is currently 31.9 °C (89.4 °F), 5.5 °C above the seasonal normal, from satellite and ocean-model data refreshed daily.
Naples numbers: NOAA CO-OPS #8725110 (Naples (outer Coast)), 1.8 km off Naples center; this open-water pick beat 5 closer-in candidates. Onshore wind or a storm can push real water at Naples above the 3.6 ft predicted peak; offshore wind can hold it under. All Naples times station-local, refreshed 2026-09-08.
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