Prospect Harbor, ME tide chart

High and low waters at NOAA tide prediction station 8412932, Prospect Harbor, in feet above mean lower low water and in local clock time. Tables below are grouped by calendar month, so each one stays correct for the whole month it names.

Predictions stored for Saturday, October 17 to Friday, October 23 (7 days, 27 high and low waters), retrieved from NOAA on 2026-10-17.

The week of Saturday, October 17

First high water shown3:58 a.m.8.979 ft, Saturday, October 17

First low water shown9:54 a.m.2.505 ft, Saturday, October 17

Highest in the stored range10.782 ftFriday, October 23, 9:23 p.m.

Lowest in the stored range0.687 ftFriday, October 23, 3:20 p.m.

Saturday, October 17 to Friday, October 23 at Prospect Harbor. Cyan means the water is rising, violet means it is falling. The dots are NOAA's predicted extremes; the line between two dots is a half-cosine interpolation, not a NOAA value. Your browser will move this to the current week if it can.

Water rising (flood)Water falling (ebb)Now, when your browser can draw it

Tide times at Prospect Harbor, October 17–23, 2026

Stored predictions cover October 17 to 23 only, so this table is a part month. The full month is available from NOAA through the printable tool.

Predicted high and low waters at NOAA station 8412932 (Prospect Harbor), October 17–23, 2026, feet above MLLW, local clock time with daylight saving applied where in effect.
Date	Tide	Time (local)	Height, ft above MLLW
Saturday, October 17	High	3:58 a.m.	8.979
	Low	9:54 a.m.	2.505
	High	4:01 p.m.	9.973
	Low	10:41 p.m.	1.637
Sunday, October 18	High	4:53 a.m.	8.783
	Low	10:49 a.m.	2.682
	High	4:58 p.m.	9.778
	Low	11:37 p.m.	1.786
Monday, October 19	High	5:49 a.m.	8.782
	Low	11:46 a.m.	2.685
	High	5:56 p.m.	9.736
Tuesday, October 20	Low	12:32 a.m.	1.754
	High	6:45 a.m.	8.999
	Low	12:46 p.m.	2.476
	High	6:53 p.m.	9.849
Wednesday, October 21	Low	1:25 a.m.	1.554
	High	7:36 a.m.	9.424
	Low	1:42 p.m.	2.037
	High	7:48 p.m.	10.1
Thursday, October 22	Low	2:13 a.m.	1.231
	High	8:22 a.m.	10.006
	Low	2:34 p.m.	1.412
	High	8:37 p.m.	10.434
Friday, October 23	Low	2:56 a.m.	0.855
	High	9:03 a.m.	10.675
	Low	3:20 p.m.	0.687
	High	9:23 p.m.	10.782

Printed from TideCurve. Predictions: NOAA CO-OPS station 8412932, datum MLLW, stored range 2026-10-17 to 2026-10-23, retrieved 2026-10-17. Astronomical predictions only.

Pick any dates for Prospect Harbor in the printable tool, which requests them from NOAA when you open it.

What the numbers at this station mean

Heights are feet above mean lower low water, the datum NOAA uses for tide predictions on US coasts. A predicted height of 0.687 ft does not mean 0.687 ft of water under a boat: it means the surface is predicted to be 0.687 ft above the chart datum, and the depth at any spot is whatever the chart says plus that number.

Mean range across the stored period. The average height difference between one extreme and the next is 7.93 ft here, with the largest single swing 10.1 ft and the smallest 6.1 ft.
Spacing. Successive high waters sit 12 h 25 min apart on average, which is why a tide that is convenient this morning is inconvenient within a few days.
Type. This station returned 14 high waters and 13 low waters across 7 days. Where those counts are not close to two a day, the station's tide is not a simple twice-daily cycle and the curve above will look it.

Station provenance

NOAA station	Prospect Harbor (8412932), Maine
Coordinates	44.4, -68.0217
Prediction type	Subordinate station. Predictions are derived by applying time and height offsets to a reference station, Portland (8418150).
Datum	MLLW — mean lower low water
Units	Feet
Time zone	America/New_York. Requested with `time_zone=lst_ldt`, so NOAA returns local standard time corrected for daylight saving time while it is in effect. Times on this page are clock times at the station, and no second conversion is applied anywhere.
Stored coverage	2026-10-17 to 2026-10-23 — 7 days, 27 predicted high and low waters, served at `/data/tides/8412932.json`
Retrieved	Station metadata 2026-10-16; predictions 2026-10-17
Request	`https://api.tidesandcurrents.noaa.gov/api/prod/datagetter?product=predictions&datum=MLLW&station=8412932&time_zone=lst_ldt&units=english&interval=hilo&format=json&begin_date=20261017&end_date=20261023`
Source	NOAA CO-OPS Data API, public domain. Station metadata from the CO-OPS Metadata API.

What these predictions are not. They are astronomical: the tide the sun and moon would produce on their own. NOAA's own FAQ puts it plainly — "we can only predict the astronomical tides" and not "the effect that wind, rain, freshwater runoff" have on the water level (NOAA Tides & Currents FAQ). A storm, a strong onshore wind or a wet week can put the water well above the line, and a hard offshore wind can hold it below. Nothing on this page tells you whether a place is safe to walk, swim, anchor or cross, and times of slack water are a different quantity again — see high tide vs slack tide.

Nearby stations

Predictions change along a coast, inside a harbour and up an estuary. If your spot is closer to one of these, use that station instead.

Bar Harbor, ME — station 8413320, about 9 mi away
Southwest Harbor, ME — station 8413564, about 17 mi away
Bass Harbor, ME — station 8413651, about 20 mi away
Stonington, Deer Isle, ME — station 8414348, about 36 mi away
Castine, ME — station 8414672, about 38 mi away

Or see every station on the list and how these pages were built.