Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 47m at 3:00 pm (1.9 ft)
Next high tide : 9:18 pm (9.0 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:21 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jun 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:559.34:428.510:210.310:371.45:008:15First Quarter1Fri
2Sat4:489.25:338.811:110.311:331.25:008:16First Quarter2Sat
3Sun5:449.26:269.112:030.34:598:16First Quarter3Sun
4Mon6:449.27:229.612:320.912:590.24:598:17Waxing Gibbous4Mon
5Tue7:479.38:1810.21:340.41:560.04:598:18Waxing Gibbous5Tue
6Wed8:499.59:1310.72:36-0.22:53-0.24:588:19Waxing Gibbous6Wed
7Thu9:489.810:0611.23:34-0.83:48-0.44:588:19Waxing Gibbous7Thu
8Fri10:4510.010:5911.54:30-1.34:42-0.64:588:20Full Moon8Fri
9Sat11:4110.111:5311.65:24-1.75:35-0.64:588:21Full Moon9Sat
10Sun12:3610.26:18-1.86:29-0.54:578:21Full Moon10Sun
11Mon12:4611.61:3110.07:12-1.77:23-0.34:578:22Waning Gibbous11Mon
12Tue1:4011.32:259.88:05-1.58:180.04:578:22Waning Gibbous12Tue
13Wed2:3410.83:219.69:00-1.09:150.44:578:23Waning Gibbous13Wed
14Thu3:3110.34:199.49:55-0.610:150.84:578:23Third Quarter14Thu
15Fri4:309.75:169.210:52-0.111:161.04:578:23Third Quarter15Fri
16Sat5:299.26:119.111:470.44:578:24Third Quarter16Sat
17Sun6:288.87:069.012:181.212:420.84:578:24Third Quarter17Sun
18Mon7:278.57:599.11:191.21:371.04:578:25Waning Crescent18Mon
19Tue8:258.38:489.22:181.12:291.24:588:25Waning Crescent19Tue
20Wed9:188.39:349.33:110.93:171.34:588:25Waning Crescent20Wed
21Thu10:068.310:169.43:580.74:001.34:588:25Waning Crescent21Thu
22Fri10:518.410:569.64:410.54:401.34:588:25New Moon22Fri
23Sat11:338.411:349.65:210.35:181.34:598:26New Moon23Sat
24Sun12:138.55:580.25:561.34:598:26New Moon24Sun
25Mon12:129.712:528.56:350.16:341.24:598:26New Moon25Mon
26Tue12:499.81:298.67:110.07:121.25:008:26Waxing Crescent26Tue
27Wed1:269.82:068.67:480.07:521.15:008:26Waxing Crescent27Wed
28Thu2:049.82:468.78:27-0.18:351.15:018:26Waxing Crescent28Thu
29Fri2:479.73:288.99:09-0.19:231.05:018:26Waxing Crescent29Fri
30Sat3:339.64:159.19:55-0.110:150.95:028:25First Quarter30Sat
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 6:09 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 86% 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 (86% 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