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 : 2:43 pm (1.5 ft)
Next high tide : in 4h 42m at 8:49 am (8.0 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 - Aug 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:178.96:01-0.36:040.55:298:03New Moon1Sun
2Mon12:2210.412:599.36:43-0.66:500.25:308:02New Moon2Mon
3Tue1:0610.61:429.67:26-0.87:380.05:318:00Waxing Crescent3Tue
4Wed1:5210.62:279.88:11-0.98:27-0.15:327:59Waxing Crescent4Wed
5Thu2:4110.43:1610.08:57-0.89:21-0.25:337:58Waxing Crescent5Thu
6Fri3:3410.14:0710.19:47-0.610:18-0.15:347:57First Quarter6Fri
7Sat4:329.75:0310.110:41-0.211:180.05:357:55First Quarter7Sat
8Sun5:339.36:0110.111:370.15:377:54First Quarter8Sun
9Mon6:388.97:0210.112:220.012:370.45:387:52Waxing Gibbous9Mon
10Tue7:468.78:0610.11:290.01:420.65:397:51Waxing Gibbous10Tue
11Wed8:528.79:0710.22:36-0.12:460.75:407:50Waxing Gibbous11Wed
12Thu9:528.910:0410.33:37-0.33:450.65:417:48Waxing Gibbous12Thu
13Fri10:469.010:5710.44:32-0.44:390.55:427:47Full Moon13Fri
14Sat11:369.111:4610.45:22-0.55:290.45:437:45Full Moon14Sat
15Sun12:239.26:09-0.56:160.45:447:44Full Moon15Sun
16Mon12:3210.21:059.26:51-0.47:000.45:467:42Full Moon16Mon
17Tue1:1510.01:469.27:31-0.27:430.55:477:41Waning Gibbous17Tue
18Wed1:569.72:249.18:090.18:240.75:487:39Waning Gibbous18Wed
19Thu2:379.33:039.08:470.59:070.95:497:37Waning Gibbous19Thu
20Fri3:198.93:448.99:260.89:521.15:507:36Waning Gibbous20Fri
21Sat4:058.54:278.710:071.210:401.35:517:34Third Quarter21Sat
22Sun4:548.15:148.610:521.511:311.45:527:32Third Quarter22Sun
23Mon5:467.86:038.611:401.85:537:31Third Quarter23Mon
24Tue6:427.66:568.612:251.512:321.95:557:29Third Quarter24Tue
25Wed7:407.67:528.81:231.41:281.95:567:28Waning Crescent25Wed
26Thu8:377.78:479.12:211.22:241.75:577:26Waning Crescent26Thu
27Fri9:298.19:379.53:140.83:171.35:587:24Waning Crescent27Fri
28Sat10:168.510:2410.04:010.34:060.85:597:22Waning Crescent28Sat
29Sun11:019.011:1110.44:46-0.24:530.36:007:21New Moon29Sun
30Mon11:459.511:5810.75:30-0.65:41-0.26:017:19New Moon30Mon
31Tue12:2910.06:15-1.06:29-0.66:027:17New Moon31Tue
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 11:46 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