Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 3:30 pm (0.4 ft)
Next high tide : in 5h 15m at 9:39 am (8.8 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:09 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 2061

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:148.36:000.35:571.25:298:02Full Moon1Mon
2Tue12:139.812:518.66:360.16:361.05:318:01Full Moon2Tue
3Wed12:529.91:278.97:11-0.17:160.75:328:00Waning Gibbous3Wed
4Thu1:309.92:039.27:47-0.27:590.55:337:59Waning Gibbous4Thu
5Fri2:109.82:419.48:25-0.28:440.45:347:57Waning Gibbous5Fri
6Sat2:549.63:239.79:06-0.19:330.35:357:56Waning Gibbous6Sat
7Sun3:439.34:099.89:520.110:260.25:367:55Third Quarter7Sun
8Mon4:379.05:019.910:410.411:230.25:377:53Third Quarter8Mon
9Tue5:358.75:579.911:360.65:387:52Third Quarter9Tue
10Wed6:408.47:009.912:250.212:360.95:397:50Waning Crescent10Wed
11Thu7:498.38:0610.11:330.21:410.95:407:49Waning Crescent11Thu
12Fri8:578.59:1110.32:410.02:480.85:427:48Waning Crescent12Fri
13Sat9:598.710:1210.53:44-0.33:500.65:437:46Waning Crescent13Sat
14Sun10:569.011:0810.74:41-0.64:470.35:447:45New Moon14Sun
15Mon11:489.35:34-0.85:420.15:457:43New Moon15Mon
16Tue12:0010.712:379.56:23-0.86:330.05:467:41New Moon16Tue
17Wed12:5010.51:239.67:08-0.77:220.05:477:40Waxing Crescent17Wed
18Thu1:3710.22:069.67:51-0.48:090.25:487:38Waxing Crescent18Thu
19Fri2:239.72:499.58:330.18:570.45:497:37Waxing Crescent19Fri
20Sat3:109.23:329.39:150.69:460.75:517:35Waxing Crescent20Sat
21Sun3:598.64:189.09:591.110:371.05:527:33First Quarter21Sun
22Mon4:508.15:068.810:461.611:301.35:537:32First Quarter22Mon
23Tue5:457.75:588.511:362.05:547:30First Quarter23Tue
24Wed6:437.46:548.412:281.512:312.25:557:28First Quarter24Wed
25Thu7:447.37:548.51:301.61:302.35:567:27Waxing Gibbous25Thu
26Fri8:427.48:498.72:301.52:292.15:577:25Waxing Gibbous26Fri
27Sat9:347.79:399.13:221.23:201.85:587:23Waxing Gibbous27Sat
28Sun10:198.010:239.44:070.84:051.56:007:22Waxing Gibbous28Sun
29Mon10:598.411:049.74:470.54:471.16:017:20Full Moon29Mon
30Tue11:388.811:4510.05:240.15:280.76:027:18Full Moon30Tue
31Wed12:149.26:00-0.26:100.36:037:16Full Moon31Wed
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 12:34 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 5% 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 Waning Crescent (5% 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