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 (tomorrow) : 3:53 am (0.9 ft)
Next high tide : in 1h 49m at 9:18 pm (9.0 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 - Dec 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:349.610:048.83:200.73:540.16:544:04Full Moon1Sat
2Sun10:129.710:458.73:590.84:330.06:554:03Full Moon2Sun
3Mon10:499.711:238.74:360.95:100.06:564:03Full Moon3Mon
4Tue11:249.65:111.05:450.06:574:03Full Moon4Tue
5Wed12:008.611:59 AM9.55:461.16:200.16:584:03Waning Gibbous5Wed
6Thu12:378.412:349.46:221.26:560.26:594:02Waning Gibbous6Thu
7Fri1:148.31:119.36:591.37:340.37:004:02Waning Gibbous7Fri
8Sat1:528.21:519.17:401.48:150.47:014:02Waning Gibbous8Sat
9Sun2:358.22:368.98:251.59:000.57:024:02Waning Gibbous9Sun
10Mon3:218.23:268.89:151.59:480.57:034:02Third Quarter10Mon
11Tue4:108.44:208.810:091.310:390.57:034:02Third Quarter11Tue
12Wed5:018.75:198.811:061.111:330.47:044:03Third Quarter12Wed
13Thu5:559.16:208.912:070.67:054:03Waning Crescent13Thu
14Fri6:519.77:229.112:290.21:080.17:064:03Waning Crescent14Fri
15Sat7:4610.38:209.51:260.02:07-0.67:074:03Waning Crescent15Sat
16Sun8:3910.89:179.82:21-0.43:02-1.27:074:03Waning Crescent16Sun
17Mon9:3111.310:1110.03:14-0.63:56-1.77:084:04New Moon17Mon
18Tue10:2411.611:0610.14:07-0.84:49-2.07:094:04New Moon18Tue
19Wed11:1711.65:00-0.95:42-2.07:094:04New Moon19Wed
20Thu12:0010.112:1111.55:54-0.86:35-1.97:104:05Waxing Crescent20Thu
21Fri12:5410.01:0511.16:48-0.57:29-1.57:104:05Waxing Crescent21Fri
22Sat1:499.72:0110.67:44-0.28:24-1.07:114:06Waxing Crescent22Sat
23Sun2:469.53:009.98:440.29:21-0.57:114:07First Quarter23Sun
24Mon3:459.24:029.39:460.610:190.07:114:07First Quarter24Mon
25Tue4:439.05:048.810:500.811:170.57:124:08First Quarter25Tue
26Wed5:418.96:068.411:540.97:124:08First Quarter26Wed
27Thu6:388.97:078.212:160.812:570.97:124:09Waxing Gibbous27Thu
28Fri7:329.08:038.21:121.01:550.77:134:10Waxing Gibbous28Fri
29Sat8:209.18:548.22:041.12:450.57:134:11Waxing Gibbous29Sat
30Sun9:049.39:398.32:501.13:290.37:134:11Waxing Gibbous30Sun
31Mon9:459.410:218.43:311.14:100.17:134:12Full Moon31Mon
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 12:35 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 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