Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 4h 49m at 10:33 pm (0.6 ft)
Next high tide (tomorrow) : 4:48 am (9.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Apr 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:468.27:327.712:262.01:101.46:217:06First Quarter1Tue
2Wed7:468.38:268.01:271.92:071.26:197:07Waxing Gibbous2Wed
3Thu8:418.59:138.42:251.62:561.06:177:08Waxing Gibbous3Thu
4Fri9:308.89:558.93:151.13:390.76:157:10Waxing Gibbous4Fri
5Sat10:149.110:349.43:590.64:190.36:147:11Waxing Gibbous5Sat
6Sun10:569.411:129.84:410.14:570.16:127:12Full Moon6Sun
7Mon11:389.611:5110.25:22-0.45:37-0.26:107:13Full Moon7Mon
8Tue12:209.76:04-0.86:17-0.36:087:14Full Moon8Tue
9Wed12:3110.61:039.86:48-1.17:00-0.46:077:16Waning Gibbous9Wed
10Thu1:1310.71:499.77:33-1.27:46-0.36:057:17Waning Gibbous10Thu
11Fri1:5910.72:389.58:22-1.18:35-0.16:037:18Waning Gibbous11Fri
12Sat2:4910.53:339.29:15-0.99:300.26:027:19Waning Gibbous12Sat
13Sun3:4610.24:349.010:13-0.510:310.56:007:20Third Quarter13Sun
14Mon4:499.95:398.911:15-0.211:360.75:587:22Third Quarter14Mon
15Tue5:569.66:468.912:210.05:567:23Third Quarter15Tue
16Wed7:069.57:529.212:460.71:280.15:557:24Waning Crescent16Wed
17Thu8:159.58:529.51:570.52:310.05:537:25Waning Crescent17Thu
18Fri9:179.69:459.93:010.13:28-0.15:517:26Waning Crescent18Fri
19Sat10:129.710:3410.23:58-0.34:18-0.25:507:28Waning Crescent19Sat
20Sun11:029.711:1910.34:48-0.65:04-0.15:487:29New Moon20Sun
21Mon11:499.65:35-0.75:470.05:477:30New Moon21Mon
22Tue12:0110.312:339.56:19-0.76:280.35:457:31New Moon22Tue
23Wed12:4110.21:159.27:00-0.67:070.55:437:32Waxing Crescent23Wed
24Thu1:2010.01:569.07:41-0.37:460.85:427:34Waxing Crescent24Thu
25Fri1:599.72:378.78:210.08:271.15:407:35Waxing Crescent25Fri
26Sat2:399.43:218.49:020.39:101.45:397:36Waxing Crescent26Sat
27Sun3:239.14:088.19:470.79:571.75:377:37Waxing Crescent27Sun
28Mon4:118.74:578.010:340.910:481.95:367:38First Quarter28Mon
29Tue5:038.55:498.011:241.111:411.95:347:39First Quarter29Tue
30Wed5:578.36:418.112:151.25:337:41First Quarter30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 1:40 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 37% 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 First Quarter (37% 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