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 4h 17m 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 - Feb 2004

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:248.48:107.41:041.91:591.06:574:50Waxing Gibbous1Sun
2Mon8:168.68:597.61:591.82:490.86:564:51Waxing Gibbous2Mon
3Tue9:038.99:447.82:471.63:330.56:544:52Waxing Gibbous3Tue
4Wed9:469.210:258.13:301.34:120.26:534:54Full Moon4Wed
5Thu10:269.511:038.44:101.14:49-0.16:524:55Full Moon5Thu
6Fri11:059.711:398.64:480.85:24-0.36:514:56Full Moon6Fri
7Sat11:429.95:260.55:59-0.56:504:58Full Moon7Sat
8Sun12:138.912:199.96:050.26:35-0.66:484:59Waning Gibbous8Sun
9Mon12:499.212:589.86:460.17:12-0.56:475:01Waning Gibbous9Mon
10Tue1:269.41:419.67:30-0.17:53-0.46:465:02Waning Gibbous10Tue
11Wed2:079.52:289.38:17-0.18:38-0.16:445:03Waning Gibbous11Wed
12Thu2:539.63:228.89:10-0.19:280.26:435:05Third Quarter12Thu
13Fri3:459.64:228.410:080.010:230.66:425:06Third Quarter13Fri
14Sat4:439.55:288.111:110.111:250.86:405:07Third Quarter14Sat
15Sun5:489.56:418.012:210.16:395:09Waning Crescent15Sun
16Mon6:589.67:528.212:330.91:33-0.16:375:10Waning Crescent16Mon
17Tue8:069.98:548.51:430.82:38-0.46:365:11Waning Crescent17Tue
18Wed9:0710.29:518.92:470.43:35-0.86:345:13New Moon18Wed
19Thu10:0310.410:429.33:440.14:27-1.06:335:14New Moon19Thu
20Fri10:5410.511:299.54:37-0.25:15-1.16:315:15New Moon20Fri
21Sat11:4310.55:26-0.45:59-1.06:305:17New Moon21Sat
22Sun12:139.612:2810.26:13-0.46:40-0.76:285:18Waxing Crescent22Sun
23Mon12:559.61:129.76:58-0.37:21-0.36:275:19Waxing Crescent23Mon
24Tue1:359.51:569.27:430.08:010.36:255:21Waxing Crescent24Tue
25Wed2:179.22:438.68:300.38:430.86:235:22Waxing Crescent25Wed
26Thu3:008.93:338.09:180.79:281.36:225:23First Quarter26Thu
27Fri3:478.64:277.510:111.010:181.86:205:25First Quarter27Fri
28Sat4:398.35:267.211:081.311:132.16:185:26First Quarter28Sat
29Sun5:368.16:297.112:101.56:175:27First Quarter29Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
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