Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 8:53 pm (1.3 ft)
Next high tide : in 3h 12m at 3:02 pm (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:03 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 2004

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:248.76:567.912:011.112:471.07:134:13Waxing Gibbous1Thu
2Fri7:168.87:537.812:561.41:440.97:134:13Waxing Gibbous2Fri
3Sat8:058.98:437.81:481.52:340.77:134:14Waxing Gibbous3Sat
4Sun8:509.19:297.92:351.53:190.47:134:15Waxing Gibbous4Sun
5Mon9:329.210:128.13:181.44:000.37:134:16Full Moon5Mon
6Tue10:129.410:528.13:571.34:390.17:134:17Full Moon6Tue
7Wed10:509.511:308.24:351.25:160.07:134:18Full Moon7Wed
8Thu11:279.65:121.15:51-0.17:134:19Full Moon8Thu
9Fri12:068.312:049.65:491.06:26-0.17:134:20Waning Gibbous9Fri
10Sat12:428.412:409.66:270.97:02-0.27:124:22Waning Gibbous10Sat
11Sun1:188.51:199.57:070.97:40-0.17:124:23Waning Gibbous11Sun
12Mon1:568.62:029.47:510.88:21-0.17:124:24Waning Gibbous12Mon
13Tue2:388.82:499.18:390.79:060.07:114:25Third Quarter13Tue
14Wed3:249.03:438.89:320.69:550.27:114:26Third Quarter14Wed
15Thu4:159.24:418.610:300.510:480.47:104:27Third Quarter15Thu
16Fri5:099.45:458.411:320.311:470.67:104:29Third Quarter16Fri
17Sat6:099.76:538.412:380.07:094:30Waning Crescent17Sat
18Sun7:1210.08:008.512:500.61:44-0.47:094:31Waning Crescent18Sun
19Mon8:1410.39:028.81:530.42:46-0.87:084:32Waning Crescent19Mon
20Tue9:1310.69:599.12:530.23:43-1.17:074:34New Moon20Tue
21Wed10:0910.910:549.33:50-0.14:38-1.47:074:35New Moon21Wed
22Thu11:0411.011:469.44:45-0.35:30-1.47:064:36New Moon22Thu
23Fri11:5610.85:38-0.36:19-1.37:054:37Waxing Crescent23Fri
24Sat12:359.512:4610.56:30-0.37:07-1.07:044:39Waxing Crescent24Sat
25Sun1:239.41:3610.07:20-0.17:53-0.67:044:40Waxing Crescent25Sun
26Mon2:119.32:269.48:120.28:40-0.17:034:41Waxing Crescent26Mon
27Tue3:009.13:198.89:060.69:280.57:024:43First Quarter27Tue
28Wed3:498.84:148.210:020.910:171.07:014:44First Quarter28Wed
29Thu4:408.65:117.710:591.111:091.57:004:45First Quarter29Thu
30Fri5:328.46:127.411:591.26:594:47First Quarter30Fri
31Sat6:288.47:137.312:051.81:011.26:584:48Waxing Gibbous31Sat
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 5:57 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 81% 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 (81% 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