Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in South Harpswell, ME.

Next low tide : 9:01 pm (0.3 ft)
Next high tide : in 3h 55m at 2:41 pm (9.6 ft)
Sunset today : 6:50 pm
Sunrise tomorrow : 6:19 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

Featured Local Businesses

Yarmouth Boat Yard

Freedom Boat Club of Maine

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)

USCG Station South Portland, ME

Maine Yacht Center

Casco Bay Boat Transport

Hamilton Marine - Portland

Eros Oyster

South Harpswell, ME Tides - Oct 1977

< Sep 1977

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Nov 1977 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sat	2:15	9.1	2:26	9.5	8:12	0.8	8:42	0.4	6:37	6:21		1	Sat
2	Sun	2:58	8.7	3:07	9.2	8:53	1.1	9:27	0.7	6:38	6:19		2	Sun
3	Mon	3:44	8.3	3:54	8.9	9:37	1.5	10:15	1.0	6:40	6:18		3	Mon
4	Tue	4:34	8.0	4:45	8.6	10:26	1.7	11:06	1.3	6:41	6:16		4	Tue
5	Wed	5:28	7.9	5:39	8.5	11:19	1.9			6:42	6:14		5	Wed
6	Thu	6:22	7.8	6:35	8.5	12:00	1.4	12:14	1.9	6:43	6:12		6	Thu
7	Fri	7:18	8.0	7:32	8.6	12:56	1.3	1:12	1.8	6:44	6:10		7	Fri
8	Sat	8:10	8.3	8:26	8.9	1:50	1.2	2:08	1.4	6:45	6:09		8	Sat
9	Sun	8:58	8.7	9:15	9.2	2:40	0.8	2:59	0.9	6:47	6:07		9	Sun
10	Mon	9:42	9.3	10:01	9.6	3:25	0.4	3:46	0.3	6:48	6:05		10	Mon
11	Tue	10:23	9.8	10:46	9.9	4:08	0.0	4:31	-0.3	6:49	6:03		11	Tue
12	Wed	11:04	10.4	11:31	10.2	4:50	-0.3	5:16	-0.8	6:50	6:02		12	Wed
13	Thu	11:47	10.8			5:33	-0.6	6:02	-1.2	6:52	6:00		13	Thu
14	Fri	12:17	10.3	12:32	11.1	6:18	-0.7	6:49	-1.4	6:53	5:58		14	Fri
15	Sat	1:05	10.3	1:19	11.1	7:05	-0.7	7:39	-1.4	6:54	5:57		15	Sat
16	Sun	1:55	10.1	2:09	11.0	7:55	-0.5	8:31	-1.2	6:55	5:55		16	Sun
17	Mon	2:49	9.9	3:04	10.7	8:48	-0.2	9:28	-0.9	6:56	5:53		17	Mon
18	Tue	3:48	9.5	4:05	10.3	9:46	0.2	10:30	-0.5	6:58	5:52		18	Tue
19	Wed	4:53	9.3	5:11	10.0	10:50	0.5	11:35	-0.2	6:59	5:50		19	Wed
20	Thu	5:59	9.1	6:19	9.7	11:58	0.6			7:00	5:48		20	Thu
21	Fri	7:05	9.2	7:27	9.6	12:41	0.0	1:08	0.6	7:01	5:47		21	Fri
22	Sat	8:08	9.3	8:32	9.6	1:47	0.1	2:15	0.5	7:03	5:45		22	Sat
23	Sun	9:05	9.6	9:29	9.6	2:47	0.1	3:15	0.2	7:04	5:44		23	Sun
24	Mon	9:55	9.9	10:20	9.6	3:40	0.0	4:07	-0.1	7:05	5:42		24	Mon
25	Tue	10:41	10.0	11:07	9.6	4:26	0.1	4:54	-0.3	7:07	5:41		25	Tue
26	Wed	11:23	10.1	11:51	9.5	5:09	0.2	5:38	-0.4	7:08	5:39		26	Wed
27	Thu			12:02	10.0	5:49	0.3	6:19	-0.3	7:09	5:38		27	Thu
28	Fri	12:32	9.3	12:40	9.9	6:27	0.5	6:57	-0.2	7:10	5:36		28	Fri
29	Sat	1:11	9.1	1:16	9.7	7:04	0.8	7:35	0.0	7:12	5:35		29	Sat
30	Sun	1:50	8.8	12:53	9.5	6:41	1.0	7:13	0.3	6:13	4:33		30	Sun
31	Mon	1:29	8.6	1:32	9.2	7:19	1.3	7:53	0.6	6:14	4:32		31	Mon
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)

www.USHarbors.com

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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 21% 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 Crescent (21% 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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