Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 12:55 pm (1.0 ft)
Next high tide : in 3h 31m at 6:49 am (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:1610.910:5010.13:58-0.74:35-1.56:165:28Full Moon1Thu
2Fri11:0811.011:3910.34:51-1.05:23-1.56:145:29Full Moon2Fri
3Sat11:5810.85:41-1.16:10-1.46:125:31Full Moon3Sat
4Sun12:2510.412:4610.56:30-1.16:55-1.06:115:32Waning Gibbous4Sun
5Mon1:1010.21:3410.07:19-0.87:40-0.56:095:33Waning Gibbous5Mon
6Tue1:569.92:239.38:08-0.48:260.16:075:34Waning Gibbous6Tue
7Wed2:439.53:168.78:590.19:150.76:055:36Third Quarter7Wed
8Thu3:339.14:118.29:530.510:071.36:045:37Third Quarter8Thu
9Fri4:278.75:097.810:510.911:041.66:025:38Third Quarter9Fri
10Sat5:248.46:107.611:521.26:005:39Third Quarter10Sat
11Sun7:248.38:117.612:051.81:551.26:586:41Waning Crescent11Sun
12Mon8:238.49:057.82:071.82:521.06:576:42Waning Crescent12Mon
13Tue9:168.79:538.13:021.63:410.86:556:43Waning Crescent13Tue
14Wed10:039.010:358.53:491.24:220.56:536:44Waning Crescent14Wed
15Thu10:459.311:138.84:310.84:590.26:516:46New Moon15Thu
16Fri11:249.511:499.25:090.55:34-0.16:496:47New Moon16Fri
17Sat12:029.75:470.16:09-0.26:486:48New Moon17Sat
18Sun12:249.512:399.86:24-0.26:44-0.46:466:49New Moon18Sun
19Mon12:589.71:179.87:03-0.47:21-0.46:446:51Waxing Crescent19Mon
20Tue1:339.91:579.77:43-0.68:00-0.36:426:52Waxing Crescent20Tue
21Wed2:1210.02:409.58:27-0.68:43-0.16:406:53Waxing Crescent21Wed
22Thu2:5610.03:309.29:16-0.59:320.26:396:54Waxing Crescent22Thu
23Fri3:469.94:268.910:10-0.310:260.56:376:55First Quarter23Fri
24Sat4:429.75:288.611:09-0.111:270.76:356:57First Quarter24Sat
25Sun5:469.66:368.512:140.06:336:58First Quarter25Sun
26Mon6:559.57:478.612:340.81:240.06:316:59Waxing Gibbous26Mon
27Tue8:079.78:539.01:450.72:33-0.26:307:00Waxing Gibbous27Tue
28Wed9:1210.09:519.52:530.33:33-0.56:287:01Waxing Gibbous28Wed
29Thu10:1110.210:439.93:53-0.24:27-0.86:267:03Waxing Gibbous29Thu
30Fri11:0410.411:3210.24:48-0.65:16-0.96:247:04Full Moon30Fri
31Sat11:5410.45:38-0.96:02-0.96:227:05Full 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 9:52 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 67% 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 (67% 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