Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 19, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 13m at 10:07 pm (0.4 ft)
Next high tide (tomorrow) : 4:20 am (9.3 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:15 am
Moon phase : First Quarter (32% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:479.85:189.011:040.011:230.17:134:14First Quarter1Tue
2Wed5:499.96:278.812:11-0.17:134:14Waxing Gibbous2Wed
3Thu6:5210.07:348.812:270.21:18-0.37:134:15Waxing Gibbous3Thu
4Fri7:5410.28:368.91:310.32:21-0.67:134:16Waxing Gibbous4Fri
5Sat8:5110.49:329.12:310.23:17-0.87:134:17Waxing Gibbous5Sat
6Sun9:4410.510:249.33:260.04:09-1.07:134:18Full Moon6Sun
7Mon10:3410.511:129.34:170.04:58-1.17:134:20Full Moon7Mon
8Tue11:2210.411:589.35:05-0.15:43-1.07:124:21Full Moon8Tue
9Wed12:0610.25:510.06:25-0.77:124:22Waning Gibbous9Wed
10Thu12:409.312:499.96:360.27:06-0.47:124:23Waning Gibbous10Thu
11Fri1:229.11:329.57:190.47:46-0.17:114:24Waning Gibbous11Fri
12Sat2:048.92:159.08:040.78:270.37:114:25Waning Gibbous12Sat
13Sun2:478.83:028.58:500.99:100.77:114:26Third Quarter13Sun
14Mon3:328.63:528.19:401.29:551.17:104:27Third Quarter14Mon
15Tue4:198.54:457.710:321.310:441.47:104:29Third Quarter15Tue
16Wed5:098.45:427.511:281.411:361.67:094:30Third Quarter16Wed
17Thu6:028.46:417.512:261.37:084:31Waning Crescent17Thu
18Fri6:578.67:387.612:311.61:241.17:084:32Waning Crescent18Fri
19Sat7:498.98:307.91:261.52:160.77:074:34Waning Crescent19Sat
20Sun8:379.39:168.32:171.13:020.27:064:35Waning Crescent20Sun
21Mon9:239.810:008.73:040.73:45-0.37:064:36New Moon21Mon
22Tue10:0710.210:439.13:490.34:27-0.77:054:38New Moon22Tue
23Wed10:5110.511:259.64:34-0.15:10-1.17:044:39New Moon23Wed
24Thu11:3610.75:20-0.55:53-1.47:034:40New Moon24Thu
25Fri12:099.912:2210.86:07-0.86:37-1.47:024:42Waxing Crescent25Fri
26Sat12:5310.21:1010.66:56-0.97:23-1.37:014:43Waxing Crescent26Sat
27Sun1:4010.32:0110.27:47-0.98:12-1.07:004:44Waxing Crescent27Sun
28Mon2:3110.22:579.78:43-0.79:05-0.66:594:46First Quarter28Mon
29Tue3:2710.13:599.29:43-0.410:03-0.26:584:47First Quarter29Tue
30Wed4:279.95:048.810:47-0.211:040.36:574:48First Quarter30Wed
31Thu5:309.76:148.511:560.06:564:50Waxing Gibbous31Thu
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 1:13 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 transitional phase. Tonight's moon is 32% 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 (32% 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