43.7418’ N, 70.0145’ W

South Harpswell, ME

58°
H -°
L 56°
S
7mph
High tide
3:16 am

Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 9:10 am (1.2 ft)
Next high tide (tomorrow) : in 6h 00m at 3:16 am (8.6 ft)
Sunset today : 6:50 pm
Sunrise tomorrow : 6:19 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:2410.13:5410.39:34-0.610:07-0.35:298:03First Quarter1Sun
2Mon4:219.74:5010.310:28-0.311:07-0.25:308:02First Quarter2Mon
3Tue5:229.35:4910.211:250.15:318:00First Quarter3Tue
4Wed6:269.06:5110.112:100.012:260.45:327:59Waxing Gibbous4Wed
5Thu7:348.87:5610.11:170.01:310.55:337:58Waxing Gibbous5Thu
6Fri8:418.88:5910.22:25-0.12:360.55:347:56Waxing Gibbous6Fri
7Sat9:419.09:5710.43:27-0.33:370.45:357:55Waxing Gibbous7Sat
8Sun10:369.210:5010.44:22-0.44:310.35:367:54Full Moon8Sun
9Mon11:269.411:3910.45:12-0.55:220.25:387:52Full Moon9Mon
10Tue12:139.55:59-0.56:100.15:397:51Full Moon10Tue
11Wed12:2510.312:569.56:41-0.46:540.25:407:50Full Moon11Wed
12Thu1:0810.01:369.57:21-0.27:370.35:417:48Waning Gibbous12Thu
13Fri1:499.72:159.47:590.18:180.55:427:47Waning Gibbous13Fri
14Sat2:309.32:549.28:370.49:010.75:437:45Waning Gibbous14Sat
15Sun3:138.93:359.19:170.89:461.05:447:44Waning Gibbous15Sun
16Mon3:588.54:198.99:591.110:331.25:457:42Third Quarter16Mon
17Tue4:478.15:078.710:441.411:241.45:477:40Third Quarter17Tue
18Wed5:397.85:578.711:321.65:487:39Third Quarter18Wed
19Thu6:347.76:518.712:181.512:251.85:497:37Third Quarter19Thu
20Fri7:327.77:478.81:161.41:211.85:507:36Waning Crescent20Fri
21Sat8:287.88:419.22:131.22:171.55:517:34Waning Crescent21Sat
22Sun9:198.29:309.63:050.83:101.15:527:32Waning Crescent22Sun
23Mon10:068.710:1710.03:520.33:580.65:537:31Waning Crescent23Mon
24Tue10:509.211:0310.44:36-0.24:460.15:547:29New Moon24Tue
25Wed11:349.711:5010.75:19-0.65:33-0.45:567:27New Moon25Wed
26Thu12:1810.26:03-0.96:21-0.85:577:26New Moon26Thu
27Fri12:3710.81:0310.66:47-1.17:09-1.05:587:24Waxing Crescent27Fri
28Sat1:2510.71:4910.87:33-1.18:00-1.15:597:22Waxing Crescent28Sat
29Sun2:1510.52:3810.88:21-0.98:53-0.96:007:21Waxing Crescent29Sun
30Mon3:0810.13:3210.79:13-0.69:50-0.76:017:19First Quarter30Mon
31Tue4:079.74:3010.410:09-0.210:52-0.46:027:17First Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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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 21% 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 Waxing Crescent (21% 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