Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 3:33 am (0.7 ft)
Next high tide : in 4h 00m at 9:02 pm (9.3 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jun 2039

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:298.97:099.112:171.412:460.55:008:14First Quarter1Wed
2Thu7:299.08:029.71:170.91:400.35:008:15Waxing Gibbous2Thu
3Fri8:299.38:5510.32:170.32:350.15:008:16Waxing Gibbous3Fri
4Sat9:279.59:4610.93:15-0.43:28-0.24:598:17Waxing Gibbous4Sat
5Sun10:239.810:3711.34:09-1.04:21-0.34:598:17Full Moon5Sun
6Mon11:199.911:3011.65:03-1.55:13-0.44:588:18Full Moon6Mon
7Tue12:1410.05:57-1.76:07-0.44:588:19Full Moon7Tue
8Wed12:2311.61:109.96:51-1.87:01-0.34:588:20Waning Gibbous8Wed
9Thu1:1811.52:059.87:45-1.67:560.04:588:20Waning Gibbous9Thu
10Fri2:1311.13:029.68:41-1.28:540.34:578:21Waning Gibbous10Fri
11Sat3:1110.64:019.49:38-0.89:550.74:578:21Waning Gibbous11Sat
12Sun4:1210.15:019.210:37-0.310:590.94:578:22Third Quarter12Sun
13Mon5:149.56:009.111:350.14:578:22Third Quarter13Mon
14Tue6:159.16:579.112:031.112:330.54:578:23Third Quarter14Tue
15Wed7:178.77:529.11:071.11:290.84:578:23Waning Crescent15Wed
16Thu8:178.48:439.22:091.02:231.14:578:24Waning Crescent16Thu
17Fri9:128.39:299.43:040.93:121.24:578:24Waning Crescent17Fri
18Sat10:028.310:129.53:530.63:561.34:578:24Waning Crescent18Sat
19Sun10:478.310:529.54:380.54:371.44:578:25New Moon19Sun
20Mon11:308.311:319.65:190.45:161.44:588:25New Moon20Mon
21Tue12:118.35:570.35:541.54:588:25New Moon21Tue
22Wed12:089.612:508.36:340.26:311.54:588:25New Moon22Wed
23Thu12:459.61:288.37:100.27:081.54:588:25New Moon23Thu
24Fri1:229.62:058.37:460.27:461.54:598:26Waxing Crescent24Fri
25Sat1:599.52:428.48:240.28:271.54:598:26Waxing Crescent25Sat
26Sun2:399.53:238.49:030.29:121.44:598:26Waxing Crescent26Sun
27Mon3:229.44:068.69:460.310:001.35:008:26First Quarter27Mon
28Tue4:109.24:528.910:310.310:531.15:008:26First Quarter28Tue
29Wed5:039.15:419.211:200.311:490.95:018:26First Quarter29Wed
30Thu5:599.06:339.612:110.35:018:26First Quarter30Thu
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 12:17 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 84% 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 Waxing Gibbous (84% 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