Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:41 am (0.9 ft)
Next high tide : in 4h 11m at 7:18 pm (9.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:2310.74:129.69:49-1.110:070.35:317:42First Quarter1Mon
2Tue4:2610.25:169.310:51-0.611:130.65:307:43First Quarter2Tue
3Wed5:329.86:219.111:56-0.25:287:45First Quarter3Wed
4Thu6:399.47:259.112:210.91:010.15:277:46First Quarter4Thu
5Fri7:469.28:269.21:310.92:050.35:257:47Waxing Gibbous5Fri
6Sat8:489.29:209.52:360.73:020.35:247:48Waxing Gibbous6Sat
7Sun9:439.210:079.63:320.43:520.45:237:49Waxing Gibbous7Sun
8Mon10:339.210:509.84:220.24:360.45:227:50Waxing Gibbous8Mon
9Tue11:179.111:299.85:060.05:160.55:207:52Full Moon9Tue
10Wed11:599.15:47-0.15:540.75:197:53Full Moon10Wed
11Thu12:069.812:389.06:25-0.16:290.85:187:54Full Moon11Thu
12Fri12:429.71:168.87:010.07:041.05:177:55Full Moon12Fri
13Sat1:169.61:538.77:360.17:401.25:167:56Waning Gibbous13Sat
14Sun1:519.52:318.58:120.28:171.45:157:57Waning Gibbous14Sun
15Mon2:289.33:118.38:500.48:581.55:147:58Waning Gibbous15Mon
16Tue3:099.13:548.29:320.69:431.75:137:59Waning Gibbous16Tue
17Wed3:548.94:418.210:170.710:321.75:128:00Third Quarter17Wed
18Thu4:438.85:308.311:060.811:251.65:118:01Third Quarter18Thu
19Fri5:368.86:218.511:560.75:108:03Third Quarter19Fri
20Sat6:338.87:148.912:211.412:490.65:098:04Third Quarter20Sat
21Sun7:329.08:079.51:201.01:440.45:088:05Waning Crescent21Sun
22Mon8:319.38:5910.12:190.42:390.15:078:06Waning Crescent22Mon
23Tue9:289.69:4910.73:15-0.23:31-0.35:068:07Waning Crescent23Tue
24Wed10:2210.010:4011.24:09-0.94:23-0.65:058:08New Moon24Wed
25Thu11:1610.211:3111.65:01-1.55:14-0.75:058:09New Moon25Thu
26Fri12:1110.45:54-1.86:07-0.85:048:09New Moon26Fri
27Sat12:2311.71:0510.46:47-1.97:00-0.75:038:10Waxing Crescent27Sat
28Sun1:1611.62:0010.27:41-1.97:54-0.45:038:11Waxing Crescent28Sun
29Mon2:1111.32:5710.08:36-1.68:51-0.15:028:12Waxing Crescent29Mon
30Tue3:0810.93:579.79:33-1.19:520.35:018:13Waxing Crescent30Tue
31Wed4:0910.34:589.510:33-0.710:570.65:018:14First Quarter31Wed
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 10:29 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 67% 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 (67% 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