Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 38m at 7:09 am (-1.3 ft)
Next high tide : 1:26 pm (9.7 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Sep 2065

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:109.85:56-0.56:12-0.46:047:15New Moon1Tue
2Wed12:2710.312:5010.36:36-0.66:57-0.76:057:13Waxing Crescent2Wed
3Thu1:1210.31:3210.57:18-0.67:44-0.86:067:11Waxing Crescent3Thu
4Fri1:5810.12:1710.68:02-0.58:34-0.86:077:09Waxing Crescent4Fri
5Sat2:489.73:0610.58:50-0.29:28-0.66:097:07Waxing Crescent5Sat
6Sun3:449.34:0210.39:430.210:28-0.26:107:06First Quarter6Sun
7Mon4:458.85:0410.010:420.611:320.16:117:04First Quarter7Mon
8Tue5:528.56:119.811:460.96:127:02First Quarter8Tue
9Wed7:028.47:219.712:420.312:551.16:137:00Waxing Gibbous9Wed
10Thu8:118.58:299.71:520.32:061.06:146:58Waxing Gibbous10Thu
11Fri9:138.79:299.92:570.23:100.76:156:57Waxing Gibbous11Fri
12Sat10:069.110:2310.03:520.04:060.46:166:55Waxing Gibbous12Sat
13Sun10:549.411:1210.04:41-0.24:560.16:186:53Full Moon13Sun
14Mon11:389.611:579.95:25-0.25:420.06:196:51Full Moon14Mon
15Tue12:189.76:050.06:25-0.16:206:49Full Moon15Tue
16Wed12:399.612:559.76:430.27:060.06:216:47Waning Gibbous16Wed
17Thu1:199.31:319.67:190.57:450.26:226:46Waning Gibbous17Thu
18Fri1:589.02:079.47:550.98:240.56:236:44Waning Gibbous18Fri
19Sat2:388.62:469.18:321.29:060.86:246:42Waning Gibbous19Sat
20Sun3:218.23:288.89:131.69:521.16:256:40Waning Gibbous20Sun
21Mon4:097.84:178.69:591.910:431.46:276:38Third Quarter21Mon
22Tue5:027.55:108.410:492.111:381.56:286:36Third Quarter22Tue
23Wed5:587.46:078.411:442.26:296:35Third Quarter23Wed
24Thu6:567.57:068.512:351.612:422.16:306:33Third Quarter24Thu
25Fri7:527.78:038.81:331.41:421.86:316:31Waning Crescent25Fri
26Sat8:438.28:569.22:271.02:371.36:326:29Waning Crescent26Sat
27Sun9:298.89:449.63:130.63:280.76:336:27Waning Crescent27Sun
28Mon10:119.410:3010.03:560.14:140.06:356:25New Moon28Mon
29Tue10:5210.111:1610.24:38-0.35:01-0.66:366:24New Moon29Tue
30Wed11:3410.65:21-0.55:47-1.16:376:22New Moon30Wed
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 10:17 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 spring phase. Tonight's moon is 7% 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 near their weekly maximum.

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 (7% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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