Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 29, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 6:30 am (0.2 ft)
Next high tide (tomorrow) : in 4h 22m at 12:08 am (9.6 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:26 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:177.99:249.73:030.83:041.45:308:02Waxing Gibbous1Sun
2Mon10:098.310:1510.13:550.33:561.05:318:01Waxing Gibbous2Mon
3Tue10:598.711:0610.64:44-0.24:470.65:328:00Full Moon3Tue
4Wed11:489.111:5610.95:33-0.75:380.25:337:59Full Moon4Wed
5Thu12:379.56:21-1.06:30-0.25:347:57Full Moon5Thu
6Fri12:4711.11:259.97:09-1.27:22-0.45:357:56Waning Gibbous6Fri
7Sat1:3811.12:1410.27:57-1.38:15-0.55:367:54Waning Gibbous7Sat
8Sun2:3110.83:0510.38:46-1.19:11-0.55:377:53Waning Gibbous8Sun
9Mon3:2610.33:5910.39:38-0.710:10-0.35:387:52Third Quarter9Mon
10Tue4:259.84:5510.210:32-0.311:12-0.15:407:50Third Quarter10Tue
11Wed5:289.35:5410.011:290.35:417:49Third Quarter11Wed
12Thu6:328.86:559.812:160.112:300.75:427:47Third Quarter12Thu
13Fri7:408.57:589.71:230.21:341.05:437:46Waning Crescent13Fri
14Sat8:458.48:599.72:300.22:381.25:447:44Waning Crescent14Sat
15Sun9:438.49:549.83:300.23:361.15:457:43Waning Crescent15Sun
16Mon10:368.510:449.84:230.14:281.05:467:41New Moon16Mon
17Tue11:238.611:309.85:110.05:140.95:477:40New Moon17Tue
18Wed12:058.75:540.05:570.95:497:38New Moon18Wed
19Thu12:129.812:448.86:320.16:370.85:507:37New Moon19Thu
20Fri12:519.71:208.97:070.27:140.85:517:35Waxing Crescent20Fri
21Sat1:279.51:548.97:410.37:510.95:527:33Waxing Crescent21Sat
22Sun2:049.22:288.98:130.58:291.05:537:32Waxing Crescent22Sun
23Mon2:418.93:038.98:480.89:091.15:547:30Waxing Crescent23Mon
24Tue3:218.63:418.89:251.19:521.25:557:28Waxing Crescent24Tue
25Wed4:048.24:228.710:051.310:391.35:567:27First Quarter25Wed
26Thu4:527.95:088.710:501.611:301.35:587:25First Quarter26Thu
27Fri5:457.75:598.811:391.75:597:23First Quarter27Fri
28Sat6:427.66:568.912:261.312:341.86:007:21Waxing Gibbous28Sat
29Sun7:447.77:579.21:271.11:341.66:017:20Waxing Gibbous29Sun
30Mon8:458.08:569.72:280.72:351.26:027:18Waxing Gibbous30Mon
31Tue9:408.59:5110.33:250.23:320.76:037:16Waxing Gibbous31Tue
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 3:19 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 100% 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 Full Moon (100% 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