Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:41 am (0.9 ft)
Next high tide : in 2h 39m at 7:18 pm (9.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 2036

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:1110.43:599.29:38-0.79:550.55:307:43First Quarter1Thu
2Fri4:1010.15:009.110:37-0.510:570.75:297:44First Quarter2Fri
3Sat5:149.86:059.111:39-0.25:287:45First Quarter3Sat
4Sun6:229.67:109.212:030.812:44-0.15:267:46First Quarter4Sun
5Mon7:319.58:149.51:130.71:50-0.15:257:47Waxing Gibbous5Mon
6Tue8:379.69:119.92:210.42:51-0.15:247:49Waxing Gibbous6Tue
7Wed9:379.710:0310.23:23-0.13:45-0.25:227:50Waxing Gibbous7Wed
8Thu10:319.810:5110.44:17-0.44:34-0.25:217:51Full Moon8Thu
9Fri11:229.811:3610.55:07-0.75:21-0.15:207:52Full Moon9Fri
10Sat12:099.75:54-0.86:050.15:197:53Full Moon10Sat
11Sun12:1910.512:549.56:39-0.76:470.45:187:54Full Moon11Sun
12Mon1:0010.31:379.27:21-0.67:280.75:167:55Waning Gibbous12Mon
13Tue1:4010.02:208.98:02-0.38:091.05:157:57Waning Gibbous13Tue
14Wed2:219.73:038.68:440.18:521.35:147:58Waning Gibbous14Wed
15Thu3:049.33:508.49:280.49:381.65:137:59Waning Gibbous15Thu
16Fri3:509.04:398.210:150.710:281.85:128:00Third Quarter16Fri
17Sat4:408.75:298.111:031.011:201.95:118:01Third Quarter17Sat
18Sun5:338.56:208.211:531.15:108:02Third Quarter18Sun
19Mon6:288.37:118.312:151.912:431.25:098:03Third Quarter19Mon
20Tue7:248.38:018.61:121.81:351.25:088:04Waning Crescent20Tue
21Wed8:198.48:479.02:071.42:241.05:078:05Waning Crescent21Wed
22Thu9:108.79:319.52:580.93:110.85:078:06Waning Crescent22Thu
23Fri9:579.010:1310.03:450.43:550.55:068:07Waning Crescent23Fri
24Sat10:439.210:5510.44:30-0.24:390.25:058:08New Moon24Sat
25Sun11:309.511:3910.85:15-0.75:240.05:048:09New Moon25Sun
26Mon12:189.76:01-1.16:10-0.15:048:10New Moon26Mon
27Tue12:2511.11:069.86:49-1.36:59-0.25:038:11Waxing Crescent27Tue
28Wed1:1411.11:579.87:39-1.47:50-0.15:028:12Waxing Crescent28Wed
29Thu2:0511.02:519.78:31-1.38:450.15:028:13Waxing Crescent29Thu
30Fri3:0010.83:499.69:26-1.19:440.35:018:13Waxing Crescent30Fri
31Sat4:0010.44:509.610:25-0.810:470.55:018:14First Quarter31Sat
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 10:29 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 67% 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 (67% 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