Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 3h 51m at 12:29 pm (0.7 ft)
Next high tide : 6:51 pm (9.9 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:07 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:139.68:038.512:490.81:44-0.26:155:29Waning Crescent1Thu
2Fri8:189.99:028.91:580.62:46-0.56:135:30Waning Crescent2Fri
3Sat9:1710.19:569.22:580.23:40-0.76:115:31New Moon3Sat
4Sun10:1010.310:449.53:53-0.14:29-0.96:105:32New Moon4Sun
5Mon10:5910.411:299.74:43-0.45:15-0.96:085:34New Moon5Mon
6Tue11:4410.25:29-0.55:57-0.76:065:35New Moon6Tue
7Wed12:109.712:279.96:13-0.46:36-0.46:045:36Waxing Crescent7Wed
8Thu12:509.61:099.56:56-0.37:140.06:035:38Waxing Crescent8Thu
9Fri1:289.41:529.07:380.07:530.56:015:39Waxing Crescent9Fri
10Sat2:089.22:368.58:220.38:340.95:595:40Waxing Crescent10Sat
11Sun3:508.94:248.010:080.710:191.46:576:41First Quarter11Sun
12Mon4:368.65:177.610:591.011:081.86:566:43First Quarter12Mon
13Tue5:288.36:147.411:531.36:546:44First Quarter13Tue
14Wed6:248.17:157.312:032.012:541.46:526:45First Quarter14Wed
15Thu7:258.28:157.41:032.11:561.36:506:46Waxing Gibbous15Thu
16Fri8:248.49:097.82:041.92:521.06:486:47Waxing Gibbous16Fri
17Sat9:178.89:558.22:591.63:390.66:476:49Waxing Gibbous17Sat
18Sun10:049.210:368.73:471.14:210.26:456:50Waxing Gibbous18Sun
19Mon10:479.711:169.24:310.55:01-0.36:436:51Full Moon19Mon
20Tue11:2910.011:549.75:13-0.15:40-0.66:416:52Full Moon20Tue
21Wed12:1210.35:56-0.66:20-0.86:396:54Full Moon21Wed
22Thu12:3410.212:5510.36:40-1.07:01-0.96:386:55Full Moon22Thu
23Fri1:1410.51:4010.27:26-1.27:44-0.86:366:56Waning Gibbous23Fri
24Sat1:5710.62:2810.08:13-1.28:31-0.56:346:57Waning Gibbous24Sat
25Sun2:4410.63:219.59:05-1.09:21-0.16:326:58Waning Gibbous25Sun
26Mon3:3610.34:209.110:01-0.710:180.36:307:00Third Quarter26Mon
27Tue4:3610.05:258.711:03-0.311:210.86:297:01Third Quarter27Tue
28Wed5:419.66:358.412:110.06:277:02Third Quarter28Wed
29Thu6:529.47:468.512:291.01:230.16:257:03Waning Crescent29Thu
30Fri8:049.48:528.71:431.02:320.16:237:04Waning Crescent30Fri
31Sat9:099.69:499.12:510.73:32-0.16:217:06Waning Crescent31Sat
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 3:40 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 30% 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 Waning Crescent (30% 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