Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 42m at 12:13 pm (1.3 ft)
Next high tide : 6:36 pm (9.1 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 - Aug 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:239.06:08-0.66:130.55:298:03Full Moon1Thu
2Fri12:3010.41:099.16:54-0.57:000.55:308:02Full Moon2Fri
3Sat1:1610.21:529.17:37-0.37:460.65:318:01Waning Gibbous3Sat
4Sun2:009.92:349.08:180.08:310.85:327:59Waning Gibbous4Sun
5Mon2:439.43:159.08:580.39:171.05:337:58Waning Gibbous5Mon
6Tue3:288.93:578.89:380.710:041.25:347:57Waning Gibbous6Tue
7Wed4:158.54:418.710:201.110:541.45:357:55Third Quarter7Wed
8Thu5:058.05:278.611:041.511:451.55:367:54Third Quarter8Thu
9Fri5:587.76:158.511:511.85:377:53Third Quarter9Fri
10Sat6:547.47:088.512:401.612:432.15:387:51Third Quarter10Sat
11Sun7:547.48:048.71:391.51:392.15:407:50Waning Crescent11Sun
12Mon8:517.58:578.92:371.32:342.05:417:48Waning Crescent12Mon
13Tue9:427.79:469.33:291.03:251.75:427:47Waning Crescent13Tue
14Wed10:298.110:329.74:150.64:131.35:437:45New Moon14Wed
15Thu11:138.511:1710.14:590.24:580.95:447:44New Moon15Thu
16Fri11:558.95:41-0.35:440.55:457:42New Moon16Fri
17Sat12:0210.412:379.36:22-0.66:300.15:467:41New Moon17Sat
18Sun12:4710.61:199.87:04-0.87:18-0.25:477:39Waxing Crescent18Sun
19Mon1:3310.62:0310.17:47-0.98:07-0.45:497:38Waxing Crescent19Mon
20Tue2:2110.42:4910.38:32-0.78:58-0.55:507:36Waxing Crescent20Tue
21Wed3:1210.03:3910.39:21-0.49:54-0.45:517:34First Quarter21Wed
22Thu4:099.54:3310.210:130.010:54-0.25:527:33First Quarter22Thu
23Fri5:109.15:3210.011:090.411:570.05:537:31First Quarter23Fri
24Sat6:158.66:359.912:100.85:547:29First Quarter24Sat
25Sun7:248.47:419.81:050.21:171.15:557:28Waxing Gibbous25Sun
26Mon8:328.48:479.82:150.22:251.15:577:26Waxing Gibbous26Mon
27Tue9:348.59:4710.03:190.13:270.95:587:24Waxing Gibbous27Tue
28Wed10:298.710:4010.14:15-0.14:220.75:597:23Full Moon28Wed
29Thu11:189.011:2910.15:05-0.25:120.56:007:21Full Moon29Thu
30Fri12:039.15:50-0.25:580.46:017:19Full Moon30Fri
31Sat12:1410.012:449.26:31-0.16:410.46:027:17Full Moon31Sat
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 3:24 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 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