Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 4h 20m at 3:30 pm (0.4 ft)
Next high tide : 9:51 pm (10.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:09 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jan 2062

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:209.33:399.39:230.49:530.07:134:13Third Quarter1Sun
2Mon4:169.24:398.710:260.610:480.57:134:14Third Quarter2Mon
3Tue5:129.15:418.211:290.811:451.07:134:15Third Quarter3Tue
4Wed6:079.06:447.912:330.87:134:16Waning Crescent4Wed
5Thu7:038.97:447.812:421.31:330.77:134:17Waning Crescent5Thu
6Fri7:559.08:377.81:381.52:270.67:134:18Waning Crescent6Fri
7Sat8:439.19:257.92:281.53:140.47:134:19Waning Crescent7Sat
8Sun9:279.210:098.03:131.53:570.37:124:20New Moon8Sun
9Mon10:099.310:498.13:551.34:370.27:124:21New Moon9Mon
10Tue10:489.411:278.24:331.25:140.17:124:22New Moon10Tue
11Wed11:259.55:101.15:480.07:124:24New Moon11Wed
12Thu12:038.212:009.55:461.16:220.07:114:25New Moon12Thu
13Fri12:378.312:359.46:221.06:550.07:114:26Waxing Crescent13Fri
14Sat1:108.41:119.37:000.97:290.07:104:27Waxing Crescent14Sat
15Sun1:458.61:509.17:410.98:070.17:104:28Waxing Crescent15Sun
16Mon2:238.72:348.98:250.88:480.37:094:30First Quarter16Mon
17Tue3:058.93:248.69:150.79:340.57:094:31First Quarter17Tue
18Wed3:529.14:198.310:090.610:240.77:084:32First Quarter18Wed
19Thu4:449.25:208.111:080.511:200.87:074:33First Quarter19Thu
20Fri5:429.46:278.012:130.37:074:35Waxing Gibbous20Fri
21Sat6:459.77:368.212:230.91:20-0.17:064:36Waxing Gibbous21Sat
22Sun7:5010.18:408.51:280.72:25-0.57:054:37Waxing Gibbous22Sun
23Mon8:5210.59:398.92:310.43:24-1.07:044:39Full Moon23Mon
24Tue9:5010.910:359.33:300.04:19-1.37:034:40Full Moon24Tue
25Wed10:4611.111:289.64:27-0.45:12-1.67:034:41Full Moon25Wed
26Thu11:4011.15:21-0.66:02-1.67:024:43Full Moon26Thu
27Fri12:189.812:3110.86:14-0.66:50-1.47:014:44Waning Gibbous27Fri
28Sat1:069.81:2210.47:06-0.57:37-1.07:004:45Waning Gibbous28Sat
29Sun1:559.72:149.77:59-0.38:25-0.46:594:47Waning Gibbous29Sun
30Mon2:449.53:089.08:530.19:140.26:584:48Third Quarter30Mon
31Tue3:349.24:048.49:500.410:050.96:574:49Third Quarter31Tue
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 6:40 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 5% 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 Waning Crescent (5% 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