Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide (tomorrow) : in 6h 23m at 1:04 am (1.1 ft)
Next high tide (tomorrow) : 7:15 am (7.8 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:259.69:4710.13:09-0.23:310.06:386:20Waning Crescent1Wed
2Thu10:179.910:3910.14:02-0.34:24-0.36:396:18New Moon2Thu
3Fri11:0410.111:2810.14:49-0.45:13-0.56:406:17New Moon3Fri
4Sat11:4710.25:34-0.35:58-0.56:416:15New Moon4Sat
5Sun12:139.912:2810.16:15-0.16:41-0.46:426:13New Moon5Sun
6Mon12:569.71:0810.06:550.27:22-0.26:446:11Waxing Crescent6Mon
7Tue1:379.31:469.87:330.58:020.16:456:10Waxing Crescent7Tue
8Wed2:189.02:269.58:130.98:440.46:466:08Waxing Crescent8Wed
9Thu3:018.63:089.18:541.29:280.76:476:06Waxing Crescent9Thu
10Fri3:478.33:558.89:391.510:171.06:486:04First Quarter10Fri
11Sat4:388.04:468.610:291.811:081.26:506:03First Quarter11Sat
12Sun5:317.95:418.511:221.96:516:01First Quarter12Sun
13Mon6:257.96:378.512:011.312:181.96:525:59First Quarter13Mon
14Tue7:198.17:338.612:561.31:151.76:535:58Waxing Gibbous14Tue
15Wed8:118.48:278.91:501.12:111.36:555:56Waxing Gibbous15Wed
16Thu8:588.99:169.22:390.83:010.86:565:54Waxing Gibbous16Thu
17Fri9:419.410:029.63:240.43:480.26:575:53Waxing Gibbous17Fri
18Sat10:2310.010:489.94:070.04:33-0.46:585:51Full Moon18Sat
19Sun11:0510.511:3310.14:50-0.35:18-0.97:005:49Full Moon19Sun
20Mon11:4810.95:34-0.66:05-1.37:015:48Full Moon20Mon
21Tue12:2010.312:3411.16:20-0.76:53-1.57:025:46Waning Gibbous21Tue
22Wed1:0910.21:2211.27:07-0.67:43-1.47:035:45Waning Gibbous22Wed
23Thu1:5910.12:1311.07:58-0.48:36-1.27:055:43Waning Gibbous23Thu
24Fri2:549.83:0910.78:52-0.19:33-0.97:065:41Waning Gibbous24Fri
25Sat3:549.54:1110.39:520.210:36-0.57:075:40Third Quarter25Sat
26Sun4:599.35:189.910:570.511:40-0.27:085:38Third Quarter26Sun
27Mon6:059.26:269.612:050.67:105:37Third Quarter27Mon
28Tue7:109.37:339.512:460.01:150.67:115:36Waning Crescent28Tue
29Wed8:129.58:379.51:510.12:210.47:125:34Waning Crescent29Wed
30Thu9:089.79:349.52:500.13:200.17:145:33Waning Crescent30Thu
31Fri9:579.910:249.53:420.14:11-0.27:155:31Waning Crescent31Fri
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 4:09 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 transitional phase. Tonight's moon is 62% 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 First Quarter (62% 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