Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 10:02 pm (0.4 ft)
Next high tide : in 2h 21m at 3:47 pm (9.6 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 5:32 am
Moon phase : Third Quarter (66% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jun 2089

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:168.55:568.511:291.011:571.75:008:15Third Quarter1Wed
2Thu6:088.36:448.712:171.15:008:16Third Quarter2Thu
3Fri7:028.37:338.912:511.51:071.14:598:17Waning Crescent3Fri
4Sat7:588.48:229.31:461.21:581.04:598:18Waning Crescent4Sat
5Sun8:528.69:109.82:400.72:490.84:598:18Waning Crescent5Sun
6Mon9:438.99:5710.33:310.23:380.54:588:19Waning Crescent6Mon
7Tue10:339.210:4410.84:19-0.44:270.24:588:20New Moon7Tue
8Wed11:239.511:3311.15:08-0.95:16-0.14:588:20New Moon8Wed
9Thu12:149.85:58-1.36:07-0.34:588:21New Moon9Thu
10Fri12:2411.31:0610.06:48-1.56:59-0.44:578:21Waxing Crescent10Fri
11Sat1:1511.41:5810.17:39-1.67:53-0.44:578:22Waxing Crescent11Sat
12Sun2:0911.22:5310.18:32-1.58:49-0.24:578:22Waxing Crescent12Sun
13Mon3:0510.93:5010.09:27-1.29:490.04:578:23First Quarter13Mon
14Tue4:0610.44:4910.010:24-0.810:530.14:578:23First Quarter14Tue
15Wed5:0810.05:4910.011:23-0.511:580.34:578:24First Quarter15Wed
16Thu6:129.56:499.912:23-0.14:578:24First Quarter16Thu
17Fri7:179.27:489.91:040.31:240.34:578:24Waxing Gibbous17Fri
18Sat8:219.08:4510.02:090.32:230.54:588:25Waxing Gibbous18Sat
19Sun9:208.99:3710.03:090.13:190.74:588:25Waxing Gibbous19Sun
20Mon10:148.810:2510.14:020.04:090.74:588:25Waxing Gibbous20Mon
21Tue11:038.811:1010.04:51-0.14:550.84:588:25Full Moon21Tue
22Wed11:488.811:5210.05:36-0.25:380.94:588:26Full Moon22Wed
23Thu12:308.86:17-0.16:191.04:598:26Full Moon23Thu
24Fri12:329.91:108.86:550.06:571.14:598:26Full Moon24Fri
25Sat1:109.81:488.77:320.17:361.24:598:26Waning Gibbous25Sat
26Sun1:489.62:268.78:080.28:151.25:008:26Waning Gibbous26Sun
27Mon2:269.43:048.78:440.38:551.35:008:26Waning Gibbous27Mon
28Tue3:069.13:448.79:220.59:391.45:018:26Waning Gibbous28Tue
29Wed3:488.94:268.710:030.610:251.45:018:26Third Quarter29Wed
30Thu4:348.65:098.810:460.811:141.45:028:25Third Quarter30Thu
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 6:54 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 66% 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 Third Quarter (66% 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