Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, July 13, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide (tomorrow) : in 5h 27m at 5:21 am (-1.1 ft)
Next high tide (tomorrow) : 11:37 am (9.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:10 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 1990

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:168.59:299.43:000.83:131.06:376:21Waxing Gibbous1Mon
2Tue9:579.210:159.73:420.44:000.36:386:20Waxing Gibbous2Tue
3Wed10:379.810:5910.04:230.04:45-0.36:396:18Full Moon3Wed
4Thu11:1810.411:4510.25:04-0.35:30-0.86:416:16Full Moon4Thu
5Fri12:0010.85:47-0.56:16-1.26:426:14Full Moon5Fri
6Sat12:3110.212:4511.06:31-0.57:04-1.36:436:12Waning Gibbous6Sat
7Sun1:2010.01:3211.07:18-0.47:55-1.26:446:11Waning Gibbous7Sun
8Mon2:109.72:2210.88:07-0.18:49-0.96:456:09Waning Gibbous8Mon
9Tue3:069.33:1910.59:010.39:48-0.56:476:07Third Quarter9Tue
10Wed4:088.94:2310.010:020.710:53-0.16:486:05Third Quarter10Wed
11Thu5:158.65:329.711:081.06:496:04Third Quarter11Thu
12Fri6:248.56:429.512:010.212:191.16:506:02Third Quarter12Fri
13Sat7:318.77:519.41:100.41:311.16:516:00Waning Crescent13Sat
14Sun8:328.98:539.42:140.32:370.86:535:59Waning Crescent14Sun
15Mon9:269.39:489.53:100.33:340.46:545:57Waning Crescent15Mon
16Tue10:139.610:379.53:590.24:240.16:555:55Waning Crescent16Tue
17Wed10:559.811:229.44:420.35:09-0.16:565:54New Moon17Wed
18Thu11:349.85:220.55:50-0.16:585:52New Moon18Thu
19Fri12:039.212:119.85:590.76:29-0.16:595:50New Moon19Fri
20Sat12:439.012:469.76:350.97:060.17:005:49Waxing Crescent20Sat
21Sun1:218.71:229.57:101.27:430.37:015:47Waxing Crescent21Sun
22Mon1:598.41:589.27:471.48:220.67:035:46Waxing Crescent22Mon
23Tue2:398.12:389.08:261.79:040.97:045:44Waxing Crescent23Tue
24Wed3:237.83:238.79:091.99:511.17:055:42Waxing Crescent24Wed
25Thu4:127.64:138.69:582.110:411.37:065:41First Quarter25Thu
26Fri5:047.65:088.410:512.211:331.37:085:39First Quarter26Fri
27Sat5:577.76:048.511:472.17:095:38First Quarter27Sat
28Sun5:507.96:018.612:261.311:45 AM1.86:104:36First Quarter28Sun
29Mon6:428.46:588.812:191.012:431.36:124:35Waxing Gibbous29Mon
30Tue7:309.07:519.21:100.71:380.76:134:34Waxing Gibbous30Tue
31Wed8:159.78:429.51:580.42:28-0.16:144:32Waxing Gibbous31Wed
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 8:29 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 spring phase. Tonight's moon is 1% 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 maximum.

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 New Moon (1% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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