Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, July 20, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 56m at 11:05 pm (0.7 ft)
Next high tide (tomorrow) : 5:17 am (8.7 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:16 am
Moon phase : First Quarter (42% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 1987

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:2911.35:11-0.45:57-1.77:134:13New Moon1Thu
2Fri12:149.612:2411.26:06-0.46:50-1.57:134:14Waxing Crescent2Fri
3Sat1:089.61:1910.87:02-0.37:43-1.27:134:15Waxing Crescent3Sat
4Sun2:029.52:1610.37:59-0.18:37-0.87:134:15Waxing Crescent4Sun
5Mon2:589.43:159.68:590.29:31-0.37:134:16First Quarter5Mon
6Tue3:549.34:169.010:020.410:270.37:134:17First Quarter6Tue
7Wed4:509.25:188.411:050.611:230.87:134:18First Quarter7Wed
8Thu5:469.16:218.012:090.77:134:20First Quarter8Thu
9Fri6:439.07:237.812:211.21:120.77:134:21Waxing Gibbous9Fri
10Sat7:379.08:207.81:191.42:090.67:124:22Waxing Gibbous10Sat
11Sun8:289.09:107.92:121.52:590.47:124:23Waxing Gibbous11Sun
12Mon9:149.29:558.02:591.53:440.37:124:24Waxing Gibbous12Mon
13Tue9:579.310:378.13:421.44:250.27:114:25Full Moon13Tue
14Wed10:379.411:158.24:221.35:030.17:114:26Full Moon14Wed
15Thu11:149.411:528.24:591.15:380.07:104:28Full Moon15Thu
16Fri11:509.55:351.16:120.07:104:29Full Moon16Fri
17Sat12:268.312:259.46:111.06:440.07:094:30Waning Gibbous17Sat
18Sun12:598.41:009.36:480.97:180.17:094:31Waning Gibbous18Sun
19Mon1:338.51:379.17:260.97:530.27:084:32Waning Gibbous19Mon
20Tue2:098.62:188.98:090.88:320.37:074:34Waning Gibbous20Tue
21Wed2:488.83:058.68:560.89:160.57:074:35Third Quarter21Wed
22Thu3:338.93:578.39:480.710:040.77:064:36Third Quarter22Thu
23Fri4:229.14:558.110:440.610:570.97:054:38Third Quarter23Fri
24Sat5:189.36:007.911:460.411:570.97:044:39Waning Crescent24Sat
25Sun6:199.57:098.012:530.17:034:40Waning Crescent25Sun
26Mon7:259.98:168.31:020.82:00-0.37:034:42Waning Crescent26Mon
27Tue8:2810.39:168.72:070.53:01-0.87:024:43Waning Crescent27Tue
28Wed9:2710.710:139.13:070.13:57-1.27:014:44New Moon28Wed
29Thu10:2411.011:079.54:05-0.34:51-1.57:004:46New Moon29Thu
30Fri11:1911.211:589.85:00-0.65:42-1.66:594:47New Moon30Fri
31Sat12:1111.05:54-0.76:31-1.56:584:48Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 2:11 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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

South Harpswell, ME is currently in a neap phase. Tonight's moon is 42% 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 near their weekly minimum.

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 First Quarter (42% illuminated). This places South Harpswell, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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