Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 12:13 pm (1.3 ft)
Next high tide : in 4h 25m at 6:15 am (8.2 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Feb 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:149.63:428.89:300.09:480.26:564:50Third Quarter1Sat
2Sun4:079.64:438.510:290.110:450.56:554:51Third Quarter2Sun
3Mon5:069.65:518.211:340.111:470.86:544:53Third Quarter3Mon
4Tue6:119.67:038.112:450.06:534:54Waning Crescent4Tue
5Wed7:199.78:128.312:550.91:54-0.26:524:56Waning Crescent5Wed
6Thu8:2410.09:128.62:020.72:56-0.56:504:57Waning Crescent6Thu
7Fri9:2310.310:088.93:030.43:52-0.86:494:58New Moon7Fri
8Sat10:1810.510:589.23:590.14:43-1.06:485:00New Moon8Sat
9Sun11:0910.511:459.34:51-0.15:31-1.06:475:01New Moon9Sun
10Mon11:5610.45:40-0.26:14-0.96:455:02New Moon10Mon
11Tue12:299.412:4110.06:26-0.26:56-0.66:445:04Waxing Crescent11Tue
12Wed1:109.31:259.67:110.07:36-0.16:425:05Waxing Crescent12Wed
13Thu1:519.22:099.07:570.38:160.46:415:07Waxing Crescent13Thu
14Fri2:339.02:568.48:440.68:580.96:405:08Waxing Crescent14Fri
15Sat3:168.73:467.99:330.99:431.46:385:09First Quarter15Sat
16Sun4:038.54:417.410:261.210:321.86:375:11First Quarter16Sun
17Mon4:558.25:407.111:231.411:272.16:355:12First Quarter17Mon
18Tue5:518.16:437.112:261.56:345:13First Quarter18Tue
19Wed6:528.27:437.212:282.21:291.36:325:15Waxing Gibbous19Wed
20Thu7:508.48:357.51:292.02:221.06:315:16Waxing Gibbous20Thu
21Fri8:408.89:217.82:211.73:080.66:295:17Waxing Gibbous21Fri
22Sat9:259.210:028.33:071.33:490.26:285:19Waxing Gibbous22Sat
23Sun10:079.610:418.73:500.84:27-0.26:265:20Full Moon23Sun
24Mon10:4810.011:189.24:310.35:04-0.66:245:21Full Moon24Mon
25Tue11:2810.211:559.65:13-0.15:41-0.86:235:23Full Moon25Tue
26Wed12:0910.25:55-0.56:20-0.96:215:24Waning Gibbous26Wed
27Thu12:339.912:5210.16:39-0.77:01-0.86:195:25Waning Gibbous27Thu
28Fri1:1410.11:399.87:26-0.87:44-0.56:185:26Waning Gibbous28Fri
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 9:14 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 62% 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 (62% 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