Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 3h 06m at 7:08 pm (0.9 ft)
Next high tide (tomorrow) : 1:21 am (9.7 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Dec 2081

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:0110.811:459.34:450.15:29-1.26:544:03New Moon1Mon
2Tue11:4910.65:340.36:17-0.96:554:03Waxing Crescent2Tue
3Wed12:349.012:3710.36:220.67:05-0.56:564:03Waxing Crescent3Wed
4Thu1:228.71:259.87:100.97:53-0.16:574:03Waxing Crescent4Thu
5Fri2:118.52:149.38:001.28:420.36:584:03Waxing Crescent5Fri
6Sat3:028.23:078.98:531.59:320.76:594:02First Quarter6Sat
7Sun3:538.14:018.49:481.710:211.07:004:02First Quarter7Sun
8Mon4:448.14:568.110:451.811:101.37:014:02First Quarter8Mon
9Tue5:348.25:527.911:431.711:591.57:024:02First Quarter9Tue
10Wed6:248.46:497.712:401.67:034:02Waxing Gibbous10Wed
11Thu7:118.67:437.812:491.61:341.37:044:02Waxing Gibbous11Thu
12Fri7:568.88:327.91:371.62:210.97:054:03Waxing Gibbous12Fri
13Sat8:389.19:178.02:211.53:050.57:054:03Waxing Gibbous13Sat
14Sun9:199.410:008.23:021.43:460.27:064:03Full Moon14Sun
15Mon9:599.710:428.33:431.24:27-0.17:074:03Full Moon15Mon
16Tue10:419.911:248.44:251.05:08-0.37:074:03Full Moon16Tue
17Wed11:2410.15:080.85:51-0.57:084:04Full Moon17Wed
18Thu12:078.612:0810.25:530.76:35-0.67:094:04Waning Gibbous18Thu
19Fri12:528.712:5510.26:400.67:22-0.67:094:05Waning Gibbous19Fri
20Sat1:398.81:4510.07:310.58:11-0.57:104:05Waning Gibbous20Sat
21Sun2:309.02:419.88:260.59:03-0.47:104:06Third Quarter21Sun
22Mon3:259.13:419.49:260.59:57-0.17:114:06Third Quarter22Mon
23Tue4:219.34:449.010:290.410:540.17:114:07Third Quarter23Tue
24Wed5:199.55:508.811:350.311:530.47:124:07Third Quarter24Wed
25Thu6:189.76:578.612:420.17:124:08Waning Crescent25Thu
26Fri7:1810.08:028.612:550.51:47-0.37:124:09Waning Crescent26Fri
27Sat8:1510.29:008.71:550.62:45-0.67:124:09Waning Crescent27Sat
28Sun9:0910.39:548.82:510.53:39-0.87:134:10New Moon28Sun
29Mon10:0010.410:458.93:430.54:30-0.87:134:11New Moon29Mon
30Tue10:4910.411:328.84:330.55:17-0.87:134:12New Moon30Tue
31Wed11:3510.25:200.56:02-0.67:134:13New Moon31Wed
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 10:14 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 96% 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 (96% 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