Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, September 21, 2026
The tide is currently falling in South Harpswell, ME.

Next low tide : in 5h 44m at 1:46 pm (2.1 ft)
Next high tide : 8:06 pm (8.5 ft)
Sunset today : 6:39 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

Featured Local Businesses

Freedom Boat Club at Yarmouth Boat Yard, Maine

Freedom Boat Club of Maine

Yarmouth Boat Yard

Oyster farm on the New Meadows River Maine, reflection of the trees and clouds in calm water

Merritt Island Oysters

Bamforth Marine

Sunset, calm water and the islands on the Maine Island Trail

Maine Island Trail Association (MITA)

Maine Yacht Center

Casco Bay Boat Transport

Hamilton Marine - Portland

USCG Station South Portland, ME

Eros Oyster

South Harpswell, ME Tides - Oct 1969

< Sep 1969

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Nov 1969 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	3:37	8.4	3:43	9.1	9:27	1.5	10:12	0.8	6:37	6:21		1	Wed
2	Thu	4:31	7.9	4:38	8.7	10:19	1.9	11:09	1.2	6:38	6:19		2	Thu
3	Fri	5:28	7.6	5:36	8.4	11:16	2.2			6:39	6:18		3	Fri
4	Sat	6:27	7.5	6:37	8.3	12:08	1.5	12:16	2.3	6:41	6:16		4	Sat
5	Sun	7:27	7.5	7:37	8.4	1:09	1.5	1:18	2.2	6:42	6:14		5	Sun
6	Mon	8:21	7.8	8:32	8.6	2:07	1.4	2:16	2.0	6:43	6:12		6	Mon
7	Tue	9:09	8.2	9:20	8.9	2:56	1.2	3:07	1.6	6:44	6:11		7	Tue
8	Wed	9:50	8.6	10:03	9.1	3:37	0.9	3:50	1.1	6:45	6:09		8	Wed
9	Thu	10:27	9.0	10:43	9.3	4:14	0.6	4:30	0.6	6:47	6:07		9	Thu
10	Fri	11:02	9.5	11:22	9.4	4:48	0.4	5:08	0.2	6:48	6:05		10	Fri
11	Sat	11:36	9.8			5:23	0.3	5:47	-0.2	6:49	6:04		11	Sat
12	Sun	12:01	9.5	12:11	10.1	5:59	0.2	6:27	-0.5	6:50	6:02		12	Sun
13	Mon	12:41	9.4	12:49	10.3	6:37	0.2	7:09	-0.6	6:51	6:00		13	Mon
14	Tue	1:23	9.3	1:30	10.4	7:19	0.3	7:54	-0.6	6:53	5:58		14	Tue
15	Wed	2:08	9.1	2:16	10.3	8:04	0.5	8:43	-0.4	6:54	5:57		15	Wed
16	Thu	2:59	8.8	3:08	10.1	8:54	0.8	9:39	-0.1	6:55	5:55		16	Thu
17	Fri	3:57	8.5	4:09	9.8	9:51	1.0	10:41	0.2	6:56	5:53		17	Fri
18	Sat	5:02	8.3	5:16	9.6	10:55	1.2	11:48	0.3	6:58	5:52		18	Sat
19	Sun	6:11	8.3	6:27	9.5			12:04	1.3	6:59	5:50		19	Sun
20	Mon	7:19	8.6	7:37	9.5	12:56	0.4	1:16	1.1	7:00	5:49		20	Mon
21	Tue	8:22	9.0	8:43	9.6	2:01	0.2	2:25	0.6	7:01	5:47		21	Tue
22	Wed	9:18	9.5	9:41	9.8	3:00	0.0	3:26	0.1	7:03	5:45		22	Wed
23	Thu	10:08	10.0	10:33	9.8	3:52	-0.1	4:19	-0.3	7:04	5:44		23	Thu
24	Fri	10:53	10.3	11:23	9.8	4:38	-0.1	5:08	-0.6	7:05	5:42		24	Fri
25	Sat	11:37	10.4			5:23	0.0	5:55	-0.7	7:07	5:41		25	Sat
26	Sun	12:09	9.6	11:54	9.3	5:05	0.2	5:39	-0.7	6:08	4:39		26	Sun
27	Mon	11:59	10.1			5:46	0.6	6:22	-0.4	6:09	4:38		27	Mon
28	Tue	12:38	8.9	12:39	9.8	6:27	1.0	7:04	0.0	6:10	4:36		28	Tue
29	Wed	1:21	8.6	1:21	9.4	7:09	1.3	7:49	0.4	6:12	4:35		29	Wed
30	Thu	2:07	8.2	2:07	9.0	7:53	1.7	8:37	0.8	6:13	4:34		30	Thu
31	Fri	2:57	7.8	2:58	8.7	8:42	2.0	9:29	1.2	6:14	4:32		31	Fri
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8417647)

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Is this week a spring tide or neap tide in South Harpswell, ME?

South Harpswell, ME is currently in a transitional phase. Tonight's moon is 75% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are South Harpswell, ME tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for South Harpswell, ME?

Tide predictions for South Harpswell, ME come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for South Harpswell, ME?

Tide data for South Harpswell, ME is sourced from NOAA Station #8417647. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8417647.

What is the moon phase in South Harpswell, ME tonight?

Tonight the moon over South Harpswell, ME is Waxing Gibbous (75% illuminated). This places South Harpswell, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

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