Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, August 3, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 9:12 pm (0.5 ft)
Next high tide : in 5h 27m at 3:05 pm (9.4 ft)
Sunset today : 8:01 pm
Sunrise tomorrow : 5:31 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2087

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:469.08:268.31:251.32:090.56:155:28Waning Crescent1Sat
2Sun8:389.59:128.92:190.72:56-0.16:135:30Waning Crescent2Sun
3Mon9:2610.09:569.53:090.13:41-0.66:125:31New Moon3Mon
4Tue10:1310.410:4010.13:57-0.54:25-1.16:105:32New Moon4Tue
5Wed11:0010.711:2410.64:44-1.15:09-1.46:085:33New Moon5Wed
6Thu11:4810.85:32-1.55:55-1.56:075:35Waxing Crescent6Thu
7Fri12:1010.912:3610.66:21-1.76:41-1.36:055:36Waxing Crescent7Fri
8Sat12:5711.01:2710.37:12-1.67:30-1.06:035:37Waxing Crescent8Sat
9Sun1:4710.83:229.89:06-1.39:23-0.57:016:38Waxing Crescent9Sun
10Mon3:4210.54:239.310:04-0.910:220.07:006:40First Quarter10Mon
11Tue4:4310.05:298.811:08-0.411:250.56:586:41First Quarter11Tue
12Wed5:499.66:378.512:160.06:566:42First Quarter12Wed
13Thu6:599.37:478.412:340.81:270.26:546:43Waxing Gibbous13Thu
14Fri8:089.38:518.61:470.92:340.26:526:45Waxing Gibbous14Fri
15Sat9:119.49:478.92:530.73:320.06:516:46Waxing Gibbous15Sat
16Sun10:059.510:359.23:500.44:22-0.16:496:47Waxing Gibbous16Sun
17Mon10:539.611:189.44:390.25:05-0.16:476:48Full Moon17Mon
18Tue11:369.611:579.55:230.05:45-0.16:456:50Full Moon18Tue
19Wed12:169.56:04-0.16:200.06:436:51Full Moon19Wed
20Thu12:329.612:549.36:41-0.16:540.26:426:52Full Moon20Thu
21Fri1:069.51:309.17:16-0.17:270.46:406:53Waning Gibbous21Fri
22Sat1:399.42:068.87:510.18:010.76:386:54Waning Gibbous22Sat
23Sun2:139.32:438.58:280.38:371.06:366:56Waning Gibbous23Sun
24Mon2:499.13:238.29:070.59:171.26:346:57Waning Gibbous24Mon
25Tue3:308.94:087.99:510.810:011.56:336:58Third Quarter25Tue
26Wed4:168.74:587.710:391.010:511.76:316:59Third Quarter26Wed
27Thu5:088.55:537.611:321.111:461.76:297:01Third Quarter27Thu
28Fri6:048.56:517.812:281.06:277:02Third Quarter28Fri
29Sat7:058.77:498.112:451.51:280.86:257:03Waning Crescent29Sat
30Sun8:069.08:448.71:471.22:250.46:247:04Waning Crescent30Sun
31Mon9:039.59:349.42:460.53:17-0.16:227:05Waning Crescent31Mon
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 6:08 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 transitional phase. Tonight's moon is 75% 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 Waning Gibbous (75% 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