Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 10:17 am (0.5 ft)
Next high tide : in 1h 19m at 4:11 am (8.9 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 5:33 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 2090

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:138.76:319.312:121.16:386:20First Quarter1Sun
2Mon7:168.57:349.112:570.61:171.36:396:18Waxing Gibbous2Mon
3Tue8:158.68:339.11:590.72:191.26:406:16Waxing Gibbous3Tue
4Wed9:088.79:259.22:550.73:131.06:426:15Waxing Gibbous4Wed
5Thu9:549.010:119.23:420.64:000.86:436:13Waxing Gibbous5Thu
6Fri10:359.210:539.34:240.54:420.66:446:11Full Moon6Fri
7Sat11:139.311:329.35:010.55:200.46:456:09Full Moon7Sat
8Sun11:489.55:350.55:550.36:466:08Full Moon8Sun
9Mon12:099.312:219.56:080.56:300.26:476:06Full Moon9Mon
10Tue12:449.212:549.56:400.67:040.26:496:04Full Moon10Tue
11Wed1:199.01:269.57:140.77:400.26:506:02Waning Gibbous11Wed
12Thu1:558.92:019.57:500.98:180.36:516:01Waning Gibbous12Thu
13Fri2:338.72:409.48:291.09:010.46:525:59Waning Gibbous13Fri
14Sat3:168.53:259.39:131.19:490.56:545:57Third Quarter14Sat
15Sun4:058.44:169.310:031.210:420.56:555:56Third Quarter15Sun
16Mon5:008.45:149.310:591.211:390.56:565:54Third Quarter16Mon
17Tue5:598.56:169.411:591.16:575:52Third Quarter17Tue
18Wed7:018.97:219.612:400.31:030.76:585:51Waning Crescent18Wed
19Thu8:029.48:2610.01:420.02:080.27:005:49Waning Crescent19Thu
20Fri9:0010.09:2510.42:41-0.43:09-0.47:015:47Waning Crescent20Fri
21Sat9:5310.610:2110.73:36-0.84:05-1.17:025:46New Moon21Sat
22Sun10:4511.111:1510.84:28-1.14:59-1.57:035:44New Moon22Sun
23Mon11:3511.45:19-1.25:51-1.87:055:43New Moon23Mon
24Tue12:0810.812:2511.56:10-1.16:43-1.87:065:41New Moon24Tue
25Wed1:0110.61:1611.37:00-0.97:35-1.67:075:40Waxing Crescent25Wed
26Thu1:5310.32:0610.97:51-0.48:28-1.17:095:38Waxing Crescent26Thu
27Fri2:479.83:0010.48:430.19:23-0.67:105:37Waxing Crescent27Fri
28Sat3:449.33:579.89:390.610:210.07:115:35First Quarter28Sat
29Sun4:438.94:579.310:401.111:210.47:125:34First Quarter29Sun
30Mon5:438.65:588.911:421.47:145:33First Quarter30Mon
31Tue6:428.56:598.712:210.712:451.57:155:31First Quarter31Tue
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 7:14 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 neap phase. Tonight's moon is 55% 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 minimum.

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 (55% illuminated). This places South Harpswell, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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