Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 33m at 7:03 am (0.1 ft)
Next high tide : 1:19 pm (8.7 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2081

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:089.93:508.69:32-0.39:450.86:145:29Third Quarter1Sat
2Sun4:059.34:548.010:340.310:461.46:135:30Third Quarter2Sun
3Mon5:088.96:017.611:420.711:531.86:115:31Third Quarter3Mon
4Tue6:158.67:087.512:510.96:095:33Waning Crescent4Tue
5Wed7:218.58:087.61:021.81:550.96:085:34Waning Crescent5Wed
6Thu8:188.78:587.92:031.72:470.76:065:35Waning Crescent6Thu
7Fri9:088.99:428.22:541.43:310.56:045:36Waning Crescent7Fri
8Sat9:519.110:208.53:381.14:100.46:025:38New Moon8Sat
9Sun11:299.211:558.85:170.85:430.37:016:39New Moon9Sun
10Mon12:069.25:540.56:140.26:596:40New Moon10Mon
11Tue12:279.012:409.26:280.46:440.36:576:42New Moon11Tue
12Wed12:579.11:139.07:010.27:130.46:556:43New Moon12Wed
13Thu1:269.21:478.87:340.27:450.66:536:44Waxing Crescent13Thu
14Fri1:569.32:228.68:100.28:190.86:526:45Waxing Crescent14Fri
15Sat2:309.33:018.38:500.38:581.06:506:46Waxing Crescent15Sat
16Sun3:099.23:478.09:350.49:431.26:486:48First Quarter16Sun
17Mon3:579.14:407.710:260.610:361.46:466:49First Quarter17Mon
18Tue4:529.05:427.611:260.711:361.56:446:50First Quarter18Tue
19Wed5:569.06:507.712:310.76:436:51First Quarter19Wed
20Thu7:069.28:018.012:431.41:410.46:416:53Waxing Gibbous20Thu
21Fri8:179.69:048.71:541.02:46-0.16:396:54Waxing Gibbous21Fri
22Sat9:2110.09:599.43:010.43:43-0.66:376:55Waxing Gibbous22Sat
23Sun10:1810.510:5010.14:01-0.34:34-1.06:356:56Full Moon23Sun
24Mon11:1210.711:3810.74:55-1.05:23-1.36:346:57Full Moon24Mon
25Tue12:0410.85:48-1.56:10-1.36:326:59Full Moon25Tue
26Wed12:2511.012:5510.66:38-1.76:57-1.06:307:00Waning Gibbous26Wed
27Thu1:1111.01:4410.27:28-1.67:43-0.66:287:01Waning Gibbous27Thu
28Fri1:5710.82:359.68:18-1.38:300.06:267:02Waning Gibbous28Fri
29Sat2:4510.33:289.09:09-0.79:210.66:257:03Waning Gibbous29Sat
30Sun3:369.84:258.410:05-0.110:161.36:237:05Third Quarter30Sun
31Mon4:339.25:267.911:050.511:161.76:217:06Third 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 10:11 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 spring phase. Tonight's moon is 96% 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 Gibbous (96% 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