Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, July 25, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 3:00 pm (1.9 ft)
Next high tide : in 6h 05m at 9:11 am (7.6 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:21 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Sep 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:049.711:2010.94:49-0.75:02-0.46:047:15New Moon1Fri
2Sat11:5210.25:36-1.15:52-0.86:057:13New Moon2Sat
3Sun12:1011.112:3910.66:24-1.46:43-1.16:067:11New Moon3Sun
4Mon1:0011.11:2710.97:12-1.47:35-1.36:087:09Waxing Crescent4Mon
5Tue1:5111.02:1710.98:01-1.38:28-1.26:097:07Waxing Crescent5Tue
6Wed2:4510.63:1010.88:52-0.99:25-0.96:107:06Waxing Crescent6Wed
7Thu3:4310.14:0710.59:47-0.410:26-0.66:117:04First Quarter7Thu
8Fri4:459.55:0810.210:460.111:30-0.26:127:02First Quarter8Fri
9Sat5:509.16:129.911:490.56:137:00First Quarter9Sat
10Sun6:578.87:189.712:370.112:550.86:146:58Waxing Gibbous10Sun
11Mon8:038.78:229.71:460.22:020.96:156:56Waxing Gibbous11Mon
12Tue9:048.89:219.72:490.23:040.86:176:55Waxing Gibbous12Tue
13Wed9:579.010:129.83:440.13:570.66:186:53Waxing Gibbous13Wed
14Thu10:449.110:589.84:320.04:450.56:196:51Full Moon14Thu
15Fri11:279.311:419.85:150.05:280.46:206:49Full Moon15Fri
16Sat12:059.35:530.16:070.36:216:47Full Moon16Sat
17Sun12:209.612:419.46:290.26:440.36:226:45Full Moon17Sun
18Mon12:579.51:159.37:020.47:200.46:236:44Waning Gibbous18Mon
19Tue1:339.21:489.37:350.67:560.56:246:42Waning Gibbous19Tue
20Wed2:099.02:239.28:090.88:330.76:266:40Waning Gibbous20Wed
21Thu2:488.72:599.08:461.19:140.86:276:38Waning Gibbous21Thu
22Fri3:298.43:408.99:261.39:591.06:286:36Third Quarter22Fri
23Sat4:158.14:278.810:111.510:491.16:296:34Third Quarter23Sat
24Sun5:067.95:198.711:011.711:421.16:306:33Third Quarter24Sun
25Mon6:017.96:158.811:561.76:316:31Third Quarter25Mon
26Tue7:008.07:159.112:401.012:551.56:326:29Waning Crescent26Tue
27Wed7:598.48:159.51:400.71:551.16:336:27Waning Crescent27Wed
28Thu8:549.09:1210.02:370.22:540.56:356:25Waning Crescent28Thu
29Fri9:469.610:0510.53:30-0.33:48-0.26:366:23Waning Crescent29Fri
30Sat10:3510.310:5710.94:20-0.84:41-0.96:376:22New Moon30Sat
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 12:05 pm — 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 86% 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 Waxing Gibbous (86% 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