Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 3h 48m at 2:43 pm (1.5 ft)
Next high tide : 9:02 pm (9.3 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 2039

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:538.74:078.79:541.110:230.67:134:13First Quarter1Sat
2Sun4:468.65:058.210:541.311:161.07:134:14First Quarter2Sun
3Mon5:408.56:057.911:551.37:134:15First Quarter3Mon
4Tue6:338.67:047.812:101.312:551.27:134:16Waxing Gibbous4Tue
5Wed7:248.77:597.81:041.51:501.07:134:17Waxing Gibbous5Wed
6Thu8:118.98:487.91:541.52:390.77:134:18Waxing Gibbous6Thu
7Fri8:559.19:338.02:391.43:220.47:134:19Waxing Gibbous7Fri
8Sat9:369.310:158.23:211.34:020.27:134:20Full Moon8Sat
9Sun10:169.510:558.34:001.14:400.07:124:21Full Moon9Sun
10Mon10:549.711:338.44:381.05:17-0.27:124:22Full Moon10Mon
11Tue11:329.85:160.85:54-0.37:124:23Full Moon11Tue
12Wed12:108.512:109.95:550.76:31-0.47:114:24Waning Gibbous12Wed
13Thu12:478.712:499.96:360.67:10-0.57:114:26Waning Gibbous13Thu
14Fri1:268.81:319.87:190.57:52-0.57:104:27Waning Gibbous14Fri
15Sat2:089.02:189.68:070.48:37-0.47:104:28Waning Gibbous15Sat
16Sun2:559.13:119.38:590.49:27-0.27:094:29Third Quarter16Sun
17Mon3:469.34:099.09:560.310:200.07:094:30Third Quarter17Mon
18Tue4:419.55:118.710:570.211:170.27:084:32Third Quarter18Tue
19Wed5:399.66:188.612:030.07:084:33Waning Crescent19Wed
20Thu6:429.87:278.612:190.41:10-0.27:074:34Waning Crescent20Thu
21Fri7:4510.18:318.81:230.42:14-0.67:064:35Waning Crescent21Fri
22Sat8:4410.49:299.02:240.23:13-1.07:054:37Waning Crescent22Sat
23Sun9:4010.710:249.23:220.04:08-1.27:054:38New Moon23Sun
24Mon10:3410.811:169.44:16-0.25:00-1.37:044:39New Moon24Mon
25Tue11:2510.75:08-0.25:49-1.37:034:41New Moon25Tue
26Wed12:059.412:1410.55:58-0.26:35-1.07:024:42Waxing Crescent26Wed
27Thu12:519.31:0110.26:460.07:20-0.77:014:43Waxing Crescent27Thu
28Fri1:369.21:489.67:340.28:04-0.27:004:45Waxing Crescent28Fri
29Sat2:229.02:369.18:230.58:490.36:594:46Waxing Crescent29Sat
30Sun3:088.83:278.59:140.89:350.86:584:47First Quarter30Sun
31Mon3:568.64:208.010:081.110:231.26:574:49First Quarter31Mon
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 5:52 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 spring phase. Tonight's moon is 84% 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 maximum.

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 Waxing Gibbous (84% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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