Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 39m at 3:30 pm (0.4 ft)
Next high tide : 9:51 pm (10.9 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 - Apr 2062

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:498.45:427.311:201.311:282.26:207:07Third Quarter1Sat
2Sun5:478.26:427.212:201.56:187:08Third Quarter2Sun
3Mon6:498.17:427.312:282.31:221.56:167:09Third Quarter3Mon
4Tue7:518.28:377.71:322.22:191.36:157:10Waning Crescent4Tue
5Wed8:468.59:238.12:311.93:071.06:137:11Waning Crescent5Wed
6Thu9:348.810:048.63:211.43:480.76:117:13Waning Crescent6Thu
7Fri10:189.110:419.24:050.84:260.46:097:14Waning Crescent7Fri
8Sat10:599.311:179.74:460.25:020.16:087:15New Moon8Sat
9Sun11:409.511:5410.15:26-0.35:400.06:067:16New Moon9Sun
10Mon12:229.66:08-0.76:19-0.16:047:17New Moon10Mon
11Tue12:3210.51:059.66:51-1.07:01-0.16:027:19Waxing Crescent11Tue
12Wed1:1310.61:519.47:36-1.17:460.16:017:20Waxing Crescent12Wed
13Thu1:5810.62:409.18:24-0.98:340.45:597:21Waxing Crescent13Thu
14Fri2:4810.43:368.89:18-0.69:290.75:577:22Waxing Crescent14Fri
15Sat3:4510.04:398.510:17-0.210:311.05:567:23First Quarter15Sat
16Sun4:509.65:478.311:230.111:391.25:547:25First Quarter16Sun
17Mon6:019.46:568.412:320.35:527:26First Quarter17Mon
18Tue7:139.38:038.712:521.21:400.35:517:27Waxing Gibbous18Tue
19Wed8:229.39:039.12:040.92:430.15:497:28Waxing Gibbous19Wed
20Thu9:249.59:549.63:090.53:370.05:477:29Waxing Gibbous20Thu
21Fri10:189.610:409.94:040.04:250.05:467:31Waxing Gibbous21Fri
22Sat11:079.611:2310.14:54-0.35:090.15:447:32Full Moon22Sat
23Sun11:549.45:40-0.55:500.35:437:33Full Moon23Sun
24Mon12:0310.212:379.26:23-0.66:300.55:417:34Full Moon24Mon
25Tue12:4210.11:199.07:03-0.57:080.85:407:35Waning Gibbous25Tue
26Wed1:199.91:598.77:43-0.27:461.25:387:37Waning Gibbous26Wed
27Thu1:579.62:408.38:230.18:261.55:377:38Waning Gibbous27Thu
28Fri2:379.23:248.09:050.59:091.85:357:39Waning Gibbous28Fri
29Sat3:228.94:137.79:510.99:572.15:347:40Waning Gibbous29Sat
30Sun4:118.65:057.610:411.210:502.25:327:41Third Quarter30Sun
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 6:40 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