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 : 12:13 pm (1.3 ft)
Next high tide : in 1h 48m at 6:15 am (8.2 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 - Oct 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:4911.15:34-1.06:02-1.56:386:20Full Moon1Tue
2Wed12:1810.812:3711.46:22-1.16:53-1.76:396:18Waning Gibbous2Wed
3Thu1:0910.71:2611.47:11-1.07:45-1.66:406:16Waning Gibbous3Thu
4Fri2:0210.42:1911.28:02-0.78:40-1.36:426:14Waning Gibbous4Fri
5Sat2:5810.03:1510.88:57-0.39:39-0.96:436:13Third Quarter5Sat
6Sun3:599.64:1710.39:570.210:42-0.46:446:11Third Quarter6Sun
7Mon5:049.25:239.911:010.611:480.06:456:09Third Quarter7Mon
8Tue6:109.06:319.612:090.86:466:07Third Quarter8Tue
9Wed7:158.97:379.412:550.21:180.96:486:06Waning Crescent9Wed
10Thu8:179.08:399.41:590.32:240.86:496:04Waning Crescent10Thu
11Fri9:129.29:349.42:570.33:210.56:506:02Waning Crescent11Fri
12Sat10:009.410:229.43:470.34:100.36:516:01Waning Crescent12Sat
13Sun10:429.611:069.44:300.34:540.16:525:59New Moon13Sun
14Mon11:229.711:479.35:100.45:340.06:545:57New Moon14Mon
15Tue11:589.75:460.56:120.06:555:55New Moon15Tue
16Wed12:259.112:339.66:210.76:480.16:565:54New Moon16Wed
17Thu1:029.01:079.56:550.97:230.26:575:52Waxing Crescent17Thu
18Fri1:388.81:419.47:291.17:590.46:595:51Waxing Crescent18Fri
19Sat2:158.52:189.28:061.38:370.67:005:49Waxing Crescent19Sat
20Sun2:558.32:589.08:461.59:200.87:015:47Waxing Crescent20Sun
21Mon3:388.13:438.99:301.610:060.97:025:46First Quarter21Mon
22Tue4:278.04:348.810:191.710:571.07:045:44First Quarter22Tue
23Wed5:188.05:298.811:131.711:500.97:055:43First Quarter23Wed
24Thu6:128.26:268.912:101.57:065:41First Quarter24Thu
25Fri7:078.67:269.112:450.81:101.17:075:40Waxing Gibbous25Fri
26Sat8:029.28:259.51:410.52:100.57:095:38Waxing Gibbous26Sat
27Sun8:549.99:219.92:360.03:06-0.27:105:37Waxing Gibbous27Sun
28Mon9:4410.610:1410.23:27-0.43:59-0.97:115:35Full Moon28Mon
29Tue10:3311.111:0610.54:17-0.84:51-1.57:135:34Full Moon29Tue
30Wed11:2311.511:5910.65:07-1.05:43-1.97:145:32Full Moon30Wed
31Thu12:1411.75:58-1.06:35-2.07:155:31Full Moon31Thu
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 9:14 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 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