Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 4h 38m at 7:19 pm (-0.2 ft)
Next high tide (tomorrow) : 1:37 am (11.0 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:069.42:388.58:240.18:340.96:155:28Waxing Crescent1Mon
2Tue2:519.03:288.09:120.69:211.46:135:30First Quarter2Tue
3Wed3:408.64:227.510:051.010:121.86:125:31First Quarter3Wed
4Thu4:348.35:217.311:031.311:092.06:105:32First Quarter4Thu
5Fri5:338.26:237.212:051.46:085:34First Quarter5Fri
6Sat6:358.27:227.412:112.11:071.36:065:35Waxing Gibbous6Sat
7Sun7:338.48:147.71:131.92:011.16:055:36Waxing Gibbous7Sun
8Mon8:248.78:598.22:071.52:460.76:035:37Waxing Gibbous8Mon
9Tue9:099.19:398.72:531.03:250.36:015:39Waxing Gibbous9Tue
10Wed9:519.410:169.23:350.54:020.05:595:40Full Moon10Wed
11Thu10:319.710:529.64:150.04:38-0.35:585:41Full Moon11Thu
12Fri11:119.811:2910.04:56-0.45:15-0.55:565:42Full Moon12Fri
13Sat11:529.95:37-0.85:54-0.65:545:44Waning Gibbous13Sat
14Sun12:0710.31:349.87:20-1.07:35-0.56:526:45Waning Gibbous14Sun
15Mon1:4810.52:209.68:06-1.08:20-0.36:516:46Waning Gibbous15Mon
16Tue2:3310.43:109.28:55-0.89:090.06:496:47Waning Gibbous16Tue
17Wed3:2410.24:078.89:50-0.510:050.46:476:48Third Quarter17Wed
18Thu4:239.95:118.410:52-0.211:070.86:456:50Third Quarter18Thu
19Fri5:289.66:218.311:590.16:436:51Third Quarter19Fri
20Sat6:399.47:338.312:151.01:100.26:426:52Waning Crescent20Sat
21Sun7:529.48:408.71:290.92:200.16:406:53Waning Crescent21Sun
22Mon8:599.69:389.12:390.63:21-0.26:386:55Waning Crescent22Mon
23Tue9:579.810:289.63:410.24:13-0.46:366:56Waning Crescent23Tue
24Wed10:499.911:149.94:34-0.35:00-0.56:346:57New Moon24Wed
25Thu11:379.911:5710.15:23-0.65:43-0.46:326:58New Moon25Thu
26Fri12:229.86:08-0.76:23-0.26:316:59New Moon26Fri
27Sat12:3710.11:049.56:50-0.77:020.16:297:01New Moon27Sat
28Sun1:1510.01:449.27:30-0.57:390.46:277:02Waxing Crescent28Sun
29Mon1:529.72:258.88:10-0.28:170.86:257:03Waxing Crescent29Mon
30Tue2:309.43:078.48:510.28:581.26:237:04Waxing Crescent30Tue
31Wed3:119.13:538.09:350.69:421.66:227:05Waxing Crescent31Wed
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 10:28 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 7% 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 Crescent (7% 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