Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 04m at 12:29 pm (0.7 ft)
Next high tide : 6:51 pm (9.9 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:07 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:548.44:078.19:561.410:161.07:134:13Third Quarter1Wed
2Thu4:408.45:008.010:481.411:051.17:134:14Third Quarter2Thu
3Fri5:308.65:577.911:441.211:581.17:134:15Third Quarter3Fri
4Sat6:228.86:568.012:420.97:134:16Waning Crescent4Sat
5Sun7:159.27:538.312:531.01:380.47:134:17Waning Crescent5Sun
6Mon8:079.88:468.71:470.72:31-0.27:134:18Waning Crescent6Mon
7Tue8:5810.39:379.22:390.23:22-0.87:134:19New Moon7Tue
8Wed9:4810.810:279.63:30-0.24:12-1.37:134:20New Moon8Wed
9Thu10:3811.211:189.94:21-0.65:01-1.77:124:21New Moon9Thu
10Fri11:3011.45:13-0.95:51-1.97:124:22New Moon10Fri
11Sat12:0810.212:2111.46:05-1.06:41-1.97:124:23Waxing Crescent11Sat
12Sun12:5910.31:1411.16:58-1.07:33-1.77:114:25Waxing Crescent12Sun
13Mon1:5210.32:1010.67:54-0.88:26-1.37:114:26Waxing Crescent13Mon
14Tue2:4810.13:1010.18:54-0.69:23-0.87:114:27First Quarter14Tue
15Wed3:4710.04:139.59:57-0.310:22-0.37:104:28First Quarter15Wed
16Thu4:479.85:189.011:020.011:230.27:094:29First Quarter16Thu
17Fri5:499.66:258.612:100.17:094:31Waxing Gibbous17Fri
18Sat6:519.57:308.512:270.51:160.17:084:32Waxing Gibbous18Sat
19Sun7:509.58:298.51:300.72:170.07:084:33Waxing Gibbous19Sun
20Mon8:449.69:218.62:260.73:09-0.17:074:34Waxing Gibbous20Mon
21Tue9:329.710:078.73:160.73:56-0.37:064:36Full Moon21Tue
22Wed10:169.710:508.74:010.64:38-0.37:054:37Full Moon22Wed
23Thu10:569.711:298.84:420.55:16-0.37:054:38Full Moon23Thu
24Fri11:349.75:210.55:52-0.27:044:40Full Moon24Fri
25Sat12:058.812:109.55:570.56:25-0.17:034:41Full Moon25Sat
26Sun12:398.812:459.46:320.66:580.07:024:42Waning Gibbous26Sun
27Mon1:138.81:219.17:090.77:320.27:014:44Waning Gibbous27Mon
28Tue1:488.71:588.87:470.88:080.47:004:45Waning Gibbous28Tue
29Wed2:258.72:398.58:290.98:480.66:594:46Waning Gibbous29Wed
30Thu3:068.63:258.29:140.99:320.86:584:48Third Quarter30Thu
31Fri3:518.74:168.010:051.010:201.06:574:49Third Quarter31Fri
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 3:40 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 transitional phase. Tonight's moon is 30% 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 Waning Crescent (30% 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