Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide (tomorrow) : in 5h 30m at 1:19 am (0.3 ft)
Next high tide (tomorrow) : 7:30 am (8.5 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:07 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 2058

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:069.34:269.310:110.410:410.07:134:13First Quarter1Tue
2Wed5:059.25:308.811:160.611:390.57:134:14First Quarter2Wed
3Thu6:039.26:348.412:220.67:134:15First Quarter3Thu
4Fri7:009.27:358.212:380.81:240.57:134:16Waxing Gibbous4Fri
5Sat7:549.38:318.21:351.02:200.37:134:17Waxing Gibbous5Sat
6Sun8:429.39:208.22:261.13:090.27:134:18Waxing Gibbous6Sun
7Mon9:269.410:058.33:121.13:540.17:134:19Waxing Gibbous7Mon
8Tue10:089.510:468.33:541.14:340.07:124:20Full Moon8Tue
9Wed10:479.511:258.34:331.15:120.07:124:21Full Moon9Wed
10Thu11:249.55:101.15:470.07:124:22Full Moon10Thu
11Fri12:018.312:009.55:461.06:210.07:124:24Full Moon11Fri
12Sat12:368.312:359.46:211.06:550.17:114:25Waning Gibbous12Sat
13Sun1:118.31:119.36:581.17:300.17:114:26Waning Gibbous13Sun
14Mon1:468.31:499.17:381.18:070.27:104:27Waning Gibbous14Mon
15Tue2:248.42:318.88:211.18:480.47:104:28Waning Gibbous15Tue
16Wed3:058.53:188.69:081.09:320.57:094:30Third Quarter16Wed
17Thu3:508.74:108.410:000.910:200.67:094:31Third Quarter17Thu
18Fri4:398.95:088.210:560.711:130.77:084:32Third Quarter18Fri
19Sat5:349.26:118.211:570.57:074:33Waning Crescent19Sat
20Sun6:339.57:178.312:110.71:020.17:074:35Waning Crescent20Sun
21Mon7:3410.08:208.61:130.62:04-0.47:064:36Waning Crescent21Mon
22Tue8:3310.59:199.02:140.23:03-1.07:054:37Waning Crescent22Tue
23Wed9:3010.910:159.43:12-0.13:59-1.47:044:39New Moon23Wed
24Thu10:2711.211:109.74:08-0.54:53-1.77:034:40New Moon24Thu
25Fri11:2111.45:03-0.75:45-1.87:034:41New Moon25Fri
26Sat12:029.912:1511.25:57-0.86:36-1.77:024:43Waxing Crescent26Sat
27Sun12:5310.01:0810.96:51-0.87:27-1.47:014:44Waxing Crescent27Sun
28Mon1:459.92:0210.37:46-0.58:18-0.97:004:45Waxing Crescent28Mon
29Tue2:379.72:589.68:42-0.29:10-0.36:594:47First Quarter29Tue
30Wed3:319.53:579.09:420.210:040.36:584:48First Quarter30Wed
31Thu4:269.24:578.410:430.511:000.96:574:49First Quarter31Thu
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 4:24 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 30% 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 Waning Crescent (30% 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