Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 2h 55m at 11:05 am (0.0 ft)
Next high tide : 5:29 pm (9.4 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:469.35:340.35:500.46:386:20Full Moon1Thu
2Fri12:029.512:219.46:090.46:270.36:396:18Full Moon2Fri
3Sat12:399.312:549.46:410.57:020.46:406:16Full Moon3Sat
4Sun1:159.11:259.37:130.87:360.46:416:15Waning Gibbous4Sun
5Mon1:508.81:589.27:461.08:120.66:436:13Waning Gibbous5Mon
6Tue2:278.52:339.18:211.38:510.76:446:11Waning Gibbous6Tue
7Wed3:078.23:128.99:001.59:350.96:456:09Waning Gibbous7Wed
8Thu3:527.93:578.89:441.810:241.16:466:08Third Quarter8Thu
9Fri4:427.84:498.710:341.911:181.26:476:06Third Quarter9Fri
10Sat5:387.75:478.711:291.96:496:04Third Quarter10Sat
11Sun6:377.86:498.912:161.112:291.76:506:02Third Quarter11Sun
12Mon7:378.27:519.31:160.81:321.36:516:01Waning Crescent12Mon
13Tue8:348.88:519.82:150.42:330.76:525:59Waning Crescent13Tue
14Wed9:269.59:4610.33:10-0.13:290.06:535:57Waning Crescent14Wed
15Thu10:1510.210:3810.74:00-0.64:22-0.86:555:56New Moon15Thu
16Fri11:0310.911:3010.94:48-1.05:14-1.36:565:54New Moon16Fri
17Sat11:5111.35:36-1.26:06-1.76:575:52New Moon17Sat
18Sun12:2210.912:4011.56:25-1.26:58-1.86:585:51Waxing Crescent18Sun
19Mon1:1510.71:3011.47:15-0.97:50-1.77:005:49Waxing Crescent19Mon
20Tue2:0910.32:2211.18:06-0.58:45-1.37:015:48Waxing Crescent20Tue
21Wed3:059.83:1810.69:010.19:45-0.77:025:46Waxing Crescent21Wed
22Thu4:079.24:2010.010:010.610:48-0.27:035:44First Quarter22Thu
23Fri5:128.85:259.611:061.111:540.27:055:43First Quarter23Fri
24Sat6:178.66:329.212:131.37:065:41First Quarter24Sat
25Sun7:218.57:389.11:000.51:221.47:075:40Waxing Gibbous25Sun
26Mon8:218.68:389.02:030.62:251.27:095:38Waxing Gibbous26Mon
27Tue9:138.99:309.12:580.63:190.97:105:37Waxing Gibbous27Tue
28Wed9:589.110:169.13:450.64:060.77:115:35Waxing Gibbous28Wed
29Thu10:379.310:589.14:250.64:480.47:125:34Full Moon29Thu
30Fri11:149.511:379.15:020.65:260.37:145:33Full Moon30Fri
31Sat11:489.55:360.76:020.27:155:31Full Moon31Sat
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 2:17 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 neap phase. Tonight's moon is 48% 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 First Quarter (48% 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