Tides Today & Tomorrow in South Harpswell, ME

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

Next low tide (tomorrow) : 2:36 am (1.3 ft)
Next high tide : in 1h 00m at 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

Yarmouth Boat Yard

Freedom Boat Club of Maine

Bamforth Marine

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

Merritt Island Oysters

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

Maine Island Trail Association (MITA)

USCG Station South Portland, ME

Hamilton Marine - Portland

Maine Yacht Center

Casco Bay Boat Transport

Eros Oyster

South Harpswell, ME Tides - Jun 2088

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Jul 2088 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Tue	10:10	8.7	10:22	9.8	4:01	0.3	4:07	0.9	5:00	8:15		1	Tue
2	Wed	10:57	8.7	11:04	9.8	4:46	0.1	4:50	1.0	5:00	8:16		2	Wed
3	Thu	11:40	8.7	11:43	9.8	5:28	0.1	5:29	1.1	4:59	8:17		3	Thu
4	Fri			12:20	8.7	6:07	0.1	6:07	1.1	4:59	8:18		4	Fri
5	Sat	12:21	9.8	12:59	8.6	6:44	0.1	6:44	1.2	4:58	8:18		5	Sat
6	Sun	12:57	9.7	1:36	8.6	7:19	0.1	7:21	1.3	4:58	8:19		6	Sun
7	Mon	1:33	9.6	2:13	8.6	7:54	0.2	7:58	1.3	4:58	8:20		7	Mon
8	Tue	2:10	9.4	2:50	8.5	8:30	0.3	8:38	1.4	4:58	8:20		8	Tue
9	Wed	2:49	9.3	3:30	8.6	9:09	0.4	9:21	1.4	4:58	8:21		9	Wed
10	Thu	3:31	9.1	4:12	8.7	9:50	0.5	10:09	1.4	4:57	8:21		10	Thu
11	Fri	4:17	9.0	4:56	8.8	10:34	0.5	10:59	1.3	4:57	8:22		11	Fri
12	Sat	5:08	8.8	5:44	9.1	11:21	0.6	11:53	1.0	4:57	8:22		12	Sat
13	Sun	6:02	8.8	6:34	9.4			12:12	0.6	4:57	8:23		13	Sun
14	Mon	7:00	8.8	7:29	9.8	12:50	0.7	1:06	0.5	4:57	8:23		14	Mon
15	Tue	8:01	8.9	8:25	10.3	1:50	0.3	2:03	0.3	4:57	8:24		15	Tue
16	Wed	9:02	9.2	9:20	10.8	2:49	-0.3	3:00	0.1	4:57	8:24		16	Wed
17	Thu	10:00	9.5	10:15	11.3	3:47	-0.8	3:56	-0.2	4:57	8:24		17	Thu
18	Fri	10:57	9.8	11:10	11.6	4:42	-1.3	4:52	-0.5	4:58	8:25		18	Fri
19	Sat	11:53	10.0			5:37	-1.6	5:47	-0.6	4:58	8:25		19	Sat
20	Sun	12:06	11.7	12:49	10.2	6:31	-1.8	6:43	-0.6	4:58	8:25		20	Sun
21	Mon	1:01	11.6	1:43	10.3	7:24	-1.8	7:39	-0.6	4:58	8:25		21	Mon
22	Tue	1:56	11.3	2:38	10.2	8:18	-1.5	8:35	-0.3	4:58	8:26		22	Tue
23	Wed	2:52	10.9	3:34	10.1	9:12	-1.2	9:34	0.0	4:59	8:26		23	Wed
24	Thu	3:50	10.3	4:31	9.9	10:07	-0.7	10:36	0.3	4:59	8:26		24	Thu
25	Fri	4:50	9.7	5:28	9.8	11:03	-0.2	11:38	0.5	5:00	8:26		25	Fri
26	Sat	5:51	9.2	6:24	9.6	11:59	0.3			5:00	8:26		26	Sat
27	Sun	6:51	8.7	7:20	9.5	12:40	0.7	12:56	0.8	5:00	8:26		27	Sun
28	Mon	7:52	8.4	8:15	9.4	1:43	0.8	1:54	1.1	5:01	8:26		28	Mon
29	Tue	8:50	8.3	9:06	9.4	2:42	0.7	2:48	1.2	5:01	8:26		29	Tue
30	Wed	9:43	8.3	9:53	9.5	3:34	0.6	3:37	1.3	5:02	8:25		30	Wed
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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