Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, August 1, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 7:37 am (0.0 ft)
Next high tide : in 12m at 1:21 am (9.7 ft)
Sunset today : 8:03 pm
Sunrise tomorrow : 5:29 am
Moon phase : Waning Gibbous (91% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Sep 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:488.37:069.612:290.312:401.26:047:15Waxing Gibbous1Tue
2Wed7:588.28:149.61:400.41:511.36:057:13Waxing Gibbous2Wed
3Thu9:028.39:169.62:470.42:561.26:067:11Waxing Gibbous3Thu
4Fri9:578.610:109.73:440.23:530.96:077:10Waxing Gibbous4Fri
5Sat10:468.810:589.84:330.14:430.76:087:08Full Moon5Sat
6Sun11:299.011:419.75:170.15:280.56:107:06Full Moon6Sun
7Mon12:089.25:560.16:090.46:117:04Full Moon7Mon
8Tue12:229.612:439.36:310.36:470.46:127:02Full Moon8Tue
9Wed1:009.31:179.37:040.57:240.56:137:00Waning Gibbous9Wed
10Thu1:369.01:509.27:370.88:010.66:146:59Waning Gibbous10Thu
11Fri2:138.72:239.18:101.18:390.86:156:57Waning Gibbous11Fri
12Sat2:528.33:008.98:461.49:201.06:166:55Waning Gibbous12Sat
13Sun3:348.03:428.79:271.710:061.36:176:53Third Quarter13Sun
14Mon4:227.64:308.510:122.010:571.56:196:51Third Quarter14Mon
15Tue5:157.45:248.511:032.111:541.56:206:49Third Quarter15Tue
16Wed6:137.36:238.611:592.26:216:48Third Quarter16Wed
17Thu7:137.47:248.812:541.41:002.06:226:46Waning Crescent17Thu
18Fri8:127.88:249.21:551.12:021.66:236:44Waning Crescent18Fri
19Sat9:058.49:189.72:500.62:591.06:246:42Waning Crescent19Sat
20Sun9:539.110:0910.23:390.13:520.36:256:40Waning Crescent20Sun
21Mon10:389.810:5810.64:24-0.44:42-0.46:266:38New Moon21Mon
22Tue11:2310.511:4810.75:09-0.85:32-1.06:286:37New Moon22Tue
23Wed12:0911.05:55-1.06:22-1.46:296:35New Moon23Wed
24Thu12:3810.712:5611.26:41-1.07:12-1.56:306:33Waxing Crescent24Thu
25Fri1:2810.51:4411.27:29-0.88:04-1.46:316:31Waxing Crescent25Fri
26Sat2:2110.02:3610.98:20-0.39:00-1.06:326:29Waxing Crescent26Sat
27Sun3:189.53:3210.59:140.210:00-0.56:336:27First Quarter27Sun
28Mon4:219.04:3610.010:140.711:060.06:346:26First Quarter28Mon
29Tue5:278.55:439.611:201.16:366:24First Quarter29Tue
30Wed6:368.36:539.312:150.412:301.46:376:22First Quarter30Wed
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 4:29 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 91% 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 Waning Gibbous (91% 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