Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 12:13 pm (1.3 ft)
Next high tide : in 5h 47m at 6:15 am (8.2 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:5910.22:309.38:16-0.78:33-0.16:165:28Waning Gibbous1Sat
2Sun2:4810.03:278.89:12-0.49:270.46:145:29Third Quarter2Sun
3Mon3:459.84:318.310:13-0.110:270.86:135:30Third Quarter3Mon
4Tue4:489.55:428.011:210.211:341.16:115:32Third Quarter4Tue
5Wed5:599.36:568.012:350.36:095:33Waning Crescent5Wed
6Thu7:129.48:058.212:481.21:460.16:085:34Waning Crescent6Thu
7Fri8:199.69:048.61:580.92:48-0.26:065:35Waning Crescent7Fri
8Sat9:179.89:559.02:590.63:41-0.46:045:37Waning Crescent8Sat
9Sun10:0910.010:419.33:520.24:28-0.66:025:38New Moon9Sun
10Mon10:5610.011:239.54:41-0.15:10-0.56:015:39New Moon10Mon
11Tue11:399.95:25-0.25:49-0.45:595:40New Moon11Tue
12Wed12:029.612:209.66:07-0.26:25-0.15:575:42Waxing Crescent12Wed
13Thu12:389.512:599.26:47-0.17:010.35:555:43Waxing Crescent13Thu
14Fri1:139.41:398.87:260.17:370.75:535:44Waxing Crescent14Fri
15Sat1:509.12:218.38:070.48:151.25:525:45Waxing Crescent15Sat
16Sun2:298.83:077.88:510.78:581.65:505:47First Quarter16Sun
17Mon3:138.53:587.49:391.19:462.05:485:48First Quarter17Mon
18Tue4:048.24:557.210:331.410:402.25:465:49First Quarter18Tue
19Wed5:018.15:567.111:331.511:402.35:455:50First Quarter19Wed
20Thu6:038.16:587.212:371.55:435:51Waxing Gibbous20Thu
21Fri7:058.37:537.612:432.11:361.25:415:53Waxing Gibbous21Fri
22Sat8:018.78:418.11:421.72:250.75:395:54Waxing Gibbous22Sat
23Sun8:499.29:238.72:331.13:080.25:375:55Waxing Gibbous23Sun
24Mon9:359.710:039.33:190.53:48-0.25:355:56Full Moon24Mon
25Tue10:1910.010:429.94:03-0.24:28-0.65:345:58Full Moon25Tue
26Wed11:0310.211:2210.44:48-0.75:09-0.85:325:59Full Moon26Wed
27Thu11:4810.35:33-1.25:51-0.85:306:00Full Moon27Thu
28Fri12:0410.812:3410.16:19-1.46:35-0.75:286:01Waning Gibbous28Fri
29Sat12:4810.91:239.87:08-1.47:22-0.35:266:02Waning Gibbous29Sat
30Sun1:3610.72:179.38:00-1.18:140.15:256:04Waning Gibbous30Sun
31Mon2:2910.33:178.88:57-0.79:110.65:236:05Third Quarter31Mon
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 9:14 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 62% 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 (62% 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