Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 3:33 am (0.7 ft)
Next high tide : in 3h 47m at 9:02 pm (9.3 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2014

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:4411.111:1310.74:26-1.34:57-1.76:165:28New Moon1Sat
2Sun11:3611.15:19-1.65:46-1.76:145:29New Moon2Sun
3Mon12:0210.912:2610.86:10-1.66:33-1.46:125:31Waxing Crescent3Mon
4Tue12:4910.81:1610.47:00-1.47:20-0.96:115:32Waxing Crescent4Tue
5Wed1:3710.52:079.77:51-1.08:09-0.36:095:33Waxing Crescent5Wed
6Thu2:2610.03:019.18:44-0.49:000.36:075:34First Quarter6Thu
7Fri3:199.53:578.59:400.19:550.96:055:36First Quarter7Fri
8Sat4:159.04:578.010:390.610:541.46:045:37First Quarter8Sat
9Sun6:158.76:597.812:420.97:026:38First Quarter9Sun
10Mon7:168.58:007.812:561.61:461.07:006:39Waxing Gibbous10Mon
11Tue8:178.58:567.92:001.62:441.06:586:41Waxing Gibbous11Tue
12Wed9:118.79:448.22:571.43:330.86:576:42Waxing Gibbous12Wed
13Thu9:588.910:278.63:451.14:160.56:556:43Waxing Gibbous13Thu
14Fri10:409.111:068.94:280.84:530.36:536:44Waxing Gibbous14Fri
15Sat11:209.311:419.25:060.55:280.16:516:46Full Moon15Sat
16Sun11:579.45:420.26:010.06:506:47Full Moon16Sun
17Mon12:159.412:339.46:180.06:340.06:486:48Full Moon17Mon
18Tue12:479.61:089.46:53-0.27:080.06:466:49Waning Gibbous18Tue
19Wed1:219.71:449.37:31-0.37:450.06:446:50Waning Gibbous19Wed
20Thu1:569.82:249.28:11-0.48:250.16:426:52Waning Gibbous20Thu
21Fri2:369.83:089.08:55-0.39:100.36:406:53Waning Gibbous21Fri
22Sat3:229.84:008.79:45-0.210:010.56:396:54Third Quarter22Sat
23Sun4:159.74:588.610:410.010:590.76:376:55Third Quarter23Sun
24Mon5:159.56:028.511:420.16:356:57Third Quarter24Mon
25Tue6:219.57:108.712:020.712:480.16:336:58Third Quarter25Tue
26Wed7:319.68:179.01:100.61:56-0.16:316:59Waning Crescent26Wed
27Thu8:399.99:189.62:190.22:59-0.56:307:00Waning Crescent27Thu
28Fri9:4110.210:1310.13:23-0.33:55-0.86:287:01Waning Crescent28Fri
29Sat10:3710.511:0410.64:20-0.84:47-1.16:267:03New Moon29Sat
30Sun11:3010.611:5210.85:13-1.35:36-1.16:247:04New Moon30Sun
31Mon12:2010.66:04-1.56:23-1.06:227:05New Moon31Mon
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 12:17 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 84% 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 Waxing Gibbous (84% 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