NOAA station analysis · local station time
Key West Tide Range: Which Dates Have the Largest Spread?
Which Key West dates have the largest NOAA-predicted tide range over the next 30 days?
The answer
From October 1, 2026 through October 30, 2026, Key West, Florida's largest listed NOAA turn-to-turn range is 2.595 ft (0.791 m converted) on October 28, 2026. The smallest listed range is 1.161 ft (0.354 m converted) on October 20, 2026.
Across the 30 local dates, NOAA returned 4 dates with 3 listed turns (13%), 26 dates with 4 listed turns (87%). The page preserves those returned counts; it does not add a tide event where the official response supplied none.
How this calculation works
For each local date, this page subtracts the lowest listed NOAA high/low prediction from the highest listed prediction. NOAA supplies feet relative to Mean Lower Low Water (MLLW); metres are conversions from those official feet values.
A listed prediction range is not observed water depth, launch clearance, or a safety guarantee. Wind, pressure, storms, and local conditions can make observed water different.
30-day NOAA station sequence
| Local date | Listed turns | Lowest turn | Highest turn | Computed range |
|---|---|---|---|---|
| 2026-10-01 | 4 | 07:51 · 0.230 ft | 00:55 · 2.401 ft | 2.171 ft (0.662 m) |
| 2026-10-02 | 4 | 09:02 · 0.334 ft | 01:46 · 2.357 ft | 2.023 ft (0.617 m) |
| 2026-10-03 | 4 | 10:21 · 0.434 ft | 02:52 · 2.285 ft | 1.851 ft (0.564 m) |
| 2026-10-04 | 4 | 11:40 · 0.509 ft | 04:17 · 2.222 ft | 1.713 ft (0.522 m) |
| 2026-10-05 | 3 | 12:45 · 0.569 ft | 05:50 · 2.213 ft | 1.644 ft (0.501 m) |
| 2026-10-06 | 4 | 13:36 · 0.629 ft | 07:09 · 2.247 ft | 1.618 ft (0.493 m) |
| 2026-10-07 | 4 | 14:17 · 0.691 ft | 08:14 · 2.272 ft | 1.581 ft (0.482 m) |
| 2026-10-08 | 4 | 02:16 · 0.677 ft | 09:09 · 2.256 ft | 1.579 ft (0.481 m) |
| 2026-10-09 | 4 | 03:07 · 0.512 ft | 21:53 · 2.248 ft | 1.736 ft (0.529 m) |
| 2026-10-10 | 4 | 03:53 · 0.382 ft | 22:23 · 2.338 ft | 1.956 ft (0.596 m) |
| 2026-10-11 | 4 | 04:36 · 0.298 ft | 22:54 · 2.373 ft | 2.075 ft (0.632 m) |
| 2026-10-12 | 4 | 05:18 · 0.265 ft | 23:25 · 2.359 ft | 2.094 ft (0.638 m) |
| 2026-10-13 | 4 | 05:59 · 0.280 ft | 23:59 · 2.307 ft | 2.027 ft (0.618 m) |
| 2026-10-14 | 3 | 06:43 · 0.339 ft | 13:20 · 1.523 ft | 1.184 ft (0.361 m) |
| 2026-10-15 | 4 | 07:31 · 0.431 ft | 00:35 · 2.231 ft | 1.800 ft (0.549 m) |
| 2026-10-16 | 4 | 08:26 · 0.539 ft | 01:15 · 2.144 ft | 1.605 ft (0.489 m) |
| 2026-10-17 | 4 | 09:32 · 0.639 ft | 02:03 · 2.057 ft | 1.418 ft (0.432 m) |
| 2026-10-18 | 4 | 10:41 · 0.711 ft | 03:01 · 1.984 ft | 1.273 ft (0.388 m) |
| 2026-10-19 | 4 | 11:43 · 0.756 ft | 04:16 · 1.941 ft | 1.185 ft (0.361 m) |
| 2026-10-20 | 3 | 12:33 · 0.785 ft | 05:36 · 1.946 ft | 1.161 ft (0.354 m) |
| 2026-10-21 | 4 | 13:13 · 0.809 ft | 06:47 · 1.985 ft | 1.176 ft (0.358 m) |
| 2026-10-22 | 4 | 13:47 · 0.828 ft | 07:46 · 2.025 ft | 1.197 ft (0.365 m) |
| 2026-10-23 | 4 | 02:03 · 0.739 ft | 20:42 · 2.089 ft | 1.350 ft (0.411 m) |
| 2026-10-24 | 4 | 02:47 · 0.499 ft | 21:13 · 2.244 ft | 1.745 ft (0.532 m) |
| 2026-10-25 | 4 | 03:30 · 0.269 ft | 21:46 · 2.378 ft | 2.109 ft (0.643 m) |
| 2026-10-26 | 4 | 04:14 · 0.082 ft | 22:23 · 2.478 ft | 2.396 ft (0.730 m) |
| 2026-10-27 | 4 | 05:00 · -0.033 ft | 23:04 · 2.533 ft | 2.566 ft (0.782 m) |
| 2026-10-28 | 4 | 05:49 · -0.059 ft | 23:49 · 2.536 ft | 2.595 ft (0.791 m) |
| 2026-10-29 | 3 | 06:43 · 0.003 ft | 13:39 · 1.433 ft | 1.430 ft (0.436 m) |
| 2026-10-30 | 4 | 07:43 · 0.132 ft | 00:41 · 2.483 ft | 2.351 ft (0.717 m) |
Source and reproducibility
Source: NOAA CO-OPS Tide Predictions API, station 8724580, request 2026-10-01 through 2026-10-30, MLLW, station local time, English units.