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 1h 02m 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 - Sep 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:389.18:5910.32:21-0.12:360.36:047:15Waning Crescent1Mon
2Tue9:389.49:5710.53:22-0.43:380.06:057:13Waning Crescent2Tue
3Wed10:329.810:5210.74:18-0.74:33-0.36:067:11New Moon3Wed
4Thu11:2310.011:4310.65:08-0.85:25-0.56:077:10New Moon4Thu
5Fri12:1010.25:56-0.86:15-0.66:087:08New Moon5Fri
6Sat12:3110.512:5510.26:40-0.77:01-0.56:097:06Waxing Crescent6Sat
7Sun1:1710.21:3810.17:23-0.47:47-0.36:117:04Waxing Crescent7Sun
8Mon2:019.82:209.88:050.08:320.06:127:02Waxing Crescent8Mon
9Tue2:469.33:039.58:470.59:180.46:137:01Waxing Crescent9Tue
10Wed3:338.83:499.29:320.910:070.86:146:59First Quarter10Wed
11Thu4:248.44:398.910:191.310:591.16:156:57First Quarter11Thu
12Fri5:178.05:328.711:101.711:541.36:166:55First Quarter12Fri
13Sat6:127.86:278.612:051.86:176:53First Quarter13Sat
14Sun7:107.87:248.612:521.41:021.96:186:51Waxing Gibbous14Sun
15Mon8:067.98:208.81:491.32:001.76:206:50Waxing Gibbous15Mon
16Tue8:578.29:109.12:421.12:521.46:216:48Waxing Gibbous16Tue
17Wed9:428.69:559.43:270.83:391.06:226:46Waxing Gibbous17Wed
18Thu10:239.010:379.74:080.44:210.56:236:44Full Moon18Thu
19Fri11:029.511:199.94:470.15:030.06:246:42Full Moon19Fri
20Sat11:409.95:25-0.25:45-0.46:256:40Full Moon20Sat
21Sun12:0010.112:2010.36:05-0.46:28-0.76:266:39Full Moon21Sun
22Mon12:4310.21:0110.56:47-0.57:13-0.96:276:37Waning Gibbous22Mon
23Tue1:2810.11:4510.77:31-0.58:01-0.96:296:35Waning Gibbous23Tue
24Wed2:1510.02:3210.68:18-0.38:52-0.86:306:33Waning Gibbous24Wed
25Thu3:079.73:2510.49:09-0.19:48-0.56:316:31Third Quarter25Thu
26Fri4:069.34:2510.210:060.210:49-0.36:326:29Third Quarter26Fri
27Sat5:099.15:3010.011:080.511:540.06:336:28Third Quarter27Sat
28Sun6:168.96:379.812:140.76:346:26Third Quarter28Sun
29Mon7:249.07:469.81:020.11:240.66:356:24Waning Crescent29Mon
30Tue8:289.28:509.92:090.02:310.46:376:22Waning Crescent30Tue
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