Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 3h 42m at 10:10 am (-0.5 ft)
Next high tide : 4:33 pm (9.5 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:0410.012:369.16:22-0.46:280.75:317:42New Moon1Sun
2Mon12:419.91:168.97:01-0.37:050.95:307:43New Moon2Mon
3Tue1:169.81:558.67:39-0.17:421.25:287:44Waxing Crescent3Tue
4Wed1:539.52:358.38:180.28:201.55:277:46Waxing Crescent4Wed
5Thu2:319.23:188.18:580.59:021.85:267:47Waxing Crescent5Thu
6Fri3:148.94:057.89:430.89:482.05:247:48Waxing Crescent6Fri
7Sat4:028.74:557.710:311.110:392.25:237:49First Quarter7Sat
8Sun4:548.55:477.711:211.211:332.25:227:50First Quarter8Sun
9Mon5:498.46:397.812:131.25:217:51First Quarter9Mon
10Tue6:458.47:318.212:302.11:061.25:197:52First Quarter10Tue
11Wed7:438.58:208.61:291.71:571.05:187:54Waxing Gibbous11Wed
12Thu8:378.89:059.32:251.22:460.75:177:55Waxing Gibbous12Thu
13Fri9:289.19:499.93:160.53:320.45:167:56Waxing Gibbous13Fri
14Sat10:179.410:3210.54:04-0.14:170.15:157:57Full Moon14Sat
15Sun11:069.611:1710.94:52-0.85:02-0.15:147:58Full Moon15Sun
16Mon11:569.75:40-1.25:50-0.25:137:59Full Moon16Mon
17Tue12:0411.212:479.86:30-1.56:39-0.25:128:00Full Moon17Tue
18Wed12:5311.31:399.77:21-1.57:300.05:118:01Waning Gibbous18Wed
19Thu1:4511.22:349.58:14-1.38:250.35:108:02Waning Gibbous19Thu
20Fri2:4110.83:339.29:11-1.09:240.65:098:03Waning Gibbous20Fri
21Sat3:4210.44:379.010:12-0.610:290.85:088:04Third Quarter21Sat
22Sun4:479.95:419.011:15-0.211:371.05:078:05Third Quarter22Sun
23Mon5:559.56:449.012:180.15:068:06Third Quarter23Mon
24Tue7:029.27:459.212:471.01:210.35:068:07Waning Crescent24Tue
25Wed8:079.08:419.51:550.92:200.55:058:08Waning Crescent25Wed
26Thu9:078.99:319.72:560.63:130.65:048:09Waning Crescent26Thu
27Fri10:008.910:169.83:500.34:000.75:038:10Waning Crescent27Fri
28Sat10:498.810:589.94:380.14:430.95:038:11New Moon28Sat
29Sun11:348.711:379.85:22-0.15:241.15:028:12New Moon29Sun
30Mon12:168.66:03-0.16:021.25:018:13New Moon30Mon
31Tue12:159.812:568.56:410.06:401.45:018:14New Moon31Tue
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 1:21 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 transitional phase. Tonight's moon is 37% 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 shifting between spring and neap.

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 (37% illuminated). This places South Harpswell, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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