Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 10:33 pm (0.6 ft)
Next high tide : in 3m at 4:33 pm (9.5 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:158.06:378.712:041.312:131.65:298:03Third Quarter1Sun
2Mon7:127.77:308.71:021.41:061.95:308:02Waning Crescent2Mon
3Tue8:117.68:238.82:011.42:012.05:318:00Waning Crescent3Tue
4Wed9:067.69:148.92:561.22:541.95:327:59Waning Crescent4Wed
5Thu9:567.810:009.23:451.03:421.75:337:58Waning Crescent5Thu
6Fri10:418.010:449.54:290.74:251.55:347:56Waning Crescent6Fri
7Sat11:248.311:259.75:100.45:071.25:367:55New Moon7Sat
8Sun12:048.55:490.15:481.05:377:54New Moon8Sun
9Mon12:059.912:428.86:26-0.16:290.75:387:52New Moon9Mon
10Tue12:4510.11:209.17:04-0.37:110.45:397:51Waxing Crescent10Tue
11Wed1:2610.21:589.47:43-0.47:550.25:407:49Waxing Crescent11Wed
12Thu2:0910.12:399.78:23-0.48:420.15:417:48Waxing Crescent12Thu
13Fri2:559.93:249.89:07-0.39:330.05:427:46Waxing Crescent13Fri
14Sat3:469.64:1310.09:55-0.110:290.05:437:45First Quarter14Sat
15Sun4:429.25:0710.010:470.211:280.15:457:43First Quarter15Sun
16Mon5:428.96:0510.011:430.55:467:42First Quarter16Mon
17Tue6:488.67:0810.012:310.112:440.75:477:40Waxing Gibbous17Tue
18Wed7:578.58:1410.11:390.11:500.85:487:39Waxing Gibbous18Wed
19Thu9:038.79:1810.32:47-0.12:560.75:497:37Waxing Gibbous19Thu
20Fri10:038.910:1610.53:48-0.43:560.55:507:36Waxing Gibbous20Fri
21Sat10:589.211:1010.64:43-0.64:510.25:517:34Full Moon21Sat
22Sun11:499.45:34-0.75:430.15:527:32Full Moon22Sun
23Mon12:0110.612:369.56:22-0.76:330.05:547:31Full Moon23Mon
24Tue12:4910.41:209.67:06-0.57:190.15:557:29Waning Gibbous24Tue
25Wed1:3410.12:029.57:47-0.28:040.35:567:27Waning Gibbous25Wed
26Thu2:189.62:439.48:280.28:500.55:577:26Waning Gibbous26Thu
27Fri3:039.13:259.29:080.69:360.85:587:24Waning Gibbous27Fri
28Sat3:508.64:098.99:511.110:261.15:597:22Third Quarter28Sat
29Sun4:408.14:578.710:361.511:181.36:007:20Third Quarter29Sun
30Mon5:337.85:478.511:251.96:017:19Third Quarter30Mon
31Tue6:307.56:428.412:131.512:182.16:037:17Third Quarter31Tue
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 7:33 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 37% 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 (37% 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