Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 8:53 pm (1.3 ft)
Next high tide : in 1h 04m at 3:02 pm (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:03 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Nov 2003

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:328.74:469.510:251.111:150.26:154:31First Quarter1Sat
2Sun5:388.65:559.211:361.36:174:30First Quarter2Sun
3Mon6:438.77:019.112:210.412:451.26:184:28Waxing Gibbous3Mon
4Tue7:408.98:009.11:220.51:470.96:194:27Waxing Gibbous4Tue
5Wed8:309.28:519.12:150.52:400.66:204:26Waxing Gibbous5Wed
6Thu9:149.49:379.13:000.53:270.36:224:25Waxing Gibbous6Thu
7Fri9:539.610:199.03:410.64:090.26:234:23Full Moon7Fri
8Sat10:309.610:598.94:170.74:470.16:244:22Full Moon8Sat
9Sun11:049.611:378.74:520.95:230.16:264:21Full Moon9Sun
10Mon11:379.55:261.15:580.26:274:20Full Moon10Mon
11Tue12:148.512:119.46:001.36:340.36:284:19Waning Gibbous11Tue
12Wed12:508.312:469.26:351.57:110.56:304:18Waning Gibbous12Wed
13Thu1:298.11:249.07:131.77:510.76:314:17Waning Gibbous13Thu
14Fri2:107.82:078.87:551.98:360.96:324:16Waning Gibbous14Fri
15Sat2:577.72:568.78:432.09:251.06:344:15Third Quarter15Sat
16Sun3:487.73:508.69:352.010:171.06:354:14Third Quarter16Sun
17Mon4:417.84:478.610:321.911:110.96:364:13Third Quarter17Mon
18Tue5:358.25:478.811:321.56:374:12Third Quarter18Tue
19Wed6:298.76:479.012:060.712:331.06:394:11Waning Crescent19Wed
20Thu7:219.47:459.41:000.31:320.36:404:10Waning Crescent20Thu
21Fri8:1010.18:409.71:520.02:26-0.56:414:10Waning Crescent21Fri
22Sat8:5910.89:3310.02:42-0.43:19-1.26:434:09New Moon22Sat
23Sun9:4711.310:2610.13:32-0.64:10-1.76:444:08New Moon23Sun
24Mon10:3711.611:1910.14:22-0.75:02-1.96:454:07New Moon24Mon
25Tue11:2811.65:13-0.65:55-1.96:464:07Waxing Crescent25Tue
26Wed12:1210.012:2111.46:05-0.46:48-1.66:474:06Waxing Crescent26Wed
27Thu1:079.71:1611.06:59-0.17:44-1.26:494:06Waxing Crescent27Thu
28Fri2:059.32:1510.47:570.38:44-0.76:504:05Waxing Crescent28Fri
29Sat3:069.03:189.88:590.79:46-0.26:514:05First Quarter29Sat
30Sun4:108.84:239.310:061.010:480.26:524:04First Quarter30Sun
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 5:57 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 spring phase. Tonight's moon is 81% 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 (81% 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