Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:04 am (1.1 ft)
Next high tide : in 2h 10m at 6:36 pm (9.1 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:348.97:0010.212:210.112:360.35:298:03Waning Crescent1Fri
2Sat7:418.98:0410.41:260.01:400.35:308:01Waning Crescent2Sat
3Sun8:479.09:0710.72:32-0.32:440.25:318:00Waning Crescent3Sun
4Mon9:499.410:0610.93:34-0.73:45-0.15:337:59Waning Crescent4Mon
5Tue10:469.711:0211.14:31-1.04:42-0.45:347:58New Moon5Tue
6Wed11:4010.011:5611.15:25-1.25:37-0.55:357:56New Moon6Wed
7Thu12:3210.26:16-1.36:30-0.65:367:55New Moon7Thu
8Fri12:4811.01:2110.27:04-1.27:21-0.55:377:54Waxing Crescent8Fri
9Sat1:3710.72:0810.17:51-0.98:11-0.35:387:52Waxing Crescent9Sat
10Sun2:2610.22:559.98:37-0.49:020.05:397:51Waxing Crescent10Sun
11Mon3:169.63:439.69:240.19:540.45:407:49Waxing Crescent11Mon
12Tue4:089.14:339.310:120.610:480.85:417:48First Quarter12Tue
13Wed5:018.55:249.111:021.011:431.15:437:46First Quarter13Wed
14Thu5:568.16:178.911:541.45:447:45First Quarter14Thu
15Fri6:547.97:128.812:411.312:491.75:457:43First Quarter15Fri
16Sat7:527.88:088.81:411.31:461.75:467:42Waxing Gibbous16Sat
17Sun8:477.99:009.02:371.22:411.65:477:40Waxing Gibbous17Sun
18Mon9:378.19:479.23:270.93:301.45:487:39Waxing Gibbous18Mon
19Tue10:218.410:309.54:100.74:131.15:497:37Waxing Gibbous19Tue
20Wed11:028.711:109.74:490.44:540.85:507:35Full Moon20Wed
21Thu11:419.011:509.95:260.15:330.55:527:34Full Moon21Thu
22Fri12:189.36:02-0.16:130.25:537:32Full Moon22Fri
23Sat12:2810.012:549.66:39-0.36:540.05:547:30Full Moon23Sat
24Sun1:0810.01:329.87:17-0.47:36-0.25:557:29Waning Gibbous24Sun
25Mon1:4910.02:1210.07:57-0.48:21-0.35:567:27Waning Gibbous25Mon
26Tue2:339.82:5610.18:41-0.39:10-0.35:577:25Waning Gibbous26Tue
27Wed3:239.53:4610.19:29-0.110:04-0.25:587:24Third Quarter27Wed
28Thu4:189.34:4110.110:220.111:030.05:597:22Third Quarter28Thu
29Fri5:189.05:4210.011:200.46:017:20Third Quarter29Fri
30Sat6:238.86:4710.012:060.012:220.56:027:19Waning Crescent30Sat
31Sun7:328.87:5410.11:130.01:300.56:037:17Waning Crescent31Sun
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 9:50 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 62% 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 (62% 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