Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 3h 06m at 9:31 pm (0.4 ft)
Next high tide (tomorrow) : 3:47 am (10.2 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:57 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2023

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:278.47:187.412:061.91:031.06:165:28Waxing Gibbous1Wed
2Thu7:308.48:167.61:121.92:040.96:145:29Waxing Gibbous2Thu
3Fri8:258.69:057.82:101.72:540.76:135:30Waxing Gibbous3Fri
4Sat9:128.99:478.12:591.43:370.56:115:32Waxing Gibbous4Sat
5Sun9:559.110:268.43:411.14:150.36:095:33Full Moon5Sun
6Mon10:339.311:018.74:200.84:490.16:085:34Full Moon6Mon
7Tue11:099.411:338.94:560.65:200.16:065:35Full Moon7Tue
8Wed11:449.45:300.45:500.16:045:37Full Moon8Wed
9Thu12:049.112:179.36:040.26:210.16:025:38Waning Gibbous9Thu
10Fri12:349.312:529.16:400.16:540.26:015:39Waning Gibbous10Fri
11Sat1:069.41:298.97:180.07:310.45:595:40Waning Gibbous11Sat
12Sun1:419.43:118.69:000.19:120.76:576:42Waning Gibbous12Sun
13Mon3:239.44:008.39:480.210:000.96:556:43Third Quarter13Mon
14Tue4:139.34:578.010:420.310:541.26:536:44Third Quarter14Tue
15Wed5:119.26:027.811:440.511:571.36:526:45Third Quarter15Wed
16Thu6:179.27:137.812:520.56:506:47Third Quarter16Thu
17Fri7:299.48:248.21:061.22:040.26:486:48Waning Crescent17Fri
18Sat8:409.79:278.82:180.93:09-0.26:466:49Waning Crescent18Sat
19Sun9:4310.210:229.43:240.34:06-0.76:446:50Waning Crescent19Sun
20Mon10:4010.611:1310.04:22-0.44:58-1.16:436:51New Moon20Mon
21Tue11:3310.85:16-0.95:46-1.36:416:53New Moon21Tue
22Wed12:0110.512:2410.76:08-1.26:32-1.26:396:54New Moon22Wed
23Thu12:4710.71:1310.46:57-1.47:17-0.96:376:55Waxing Crescent23Thu
24Fri1:3110.62:0110.07:45-1.28:01-0.46:356:56Waxing Crescent24Fri
25Sat2:1510.42:509.48:33-0.98:460.26:346:58Waxing Crescent25Sat
26Sun3:019.93:418.89:23-0.49:340.96:326:59Waxing Crescent26Sun
27Mon3:509.44:368.210:170.210:271.56:307:00First Quarter27Mon
28Tue4:448.95:357.711:140.711:241.96:287:01First Quarter28Tue
29Wed5:438.56:367.412:161.16:267:02First Quarter29Wed
30Thu6:468.27:397.412:272.21:211.36:257:04First Quarter30Thu
31Fri7:508.28:377.61:332.22:231.36:237:05Waxing Gibbous31Fri
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 12:39 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 transitional phase. Tonight's moon is 27% 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 Waxing Crescent (27% 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